PUBLICATIONS

Journal

  1. Nonthermal melting of charge density wave order via nucleation in VTe2
    Hiroshi Tanimura, Norihiko L. Okamoto, Takao Homma, Yusuke Sato, Akihiro Ishii, Hitoshi Takamura, Tetsu Ichitsubo
    Physical Review B, Vol. 105, 245402(1-9) (2022).

  2. Excellently balanced water-intercalation-type heat-storage oxide
    Takuya Hatakeyama, Norihiko L. Okamoto, Satoshi Otake, Hiroaki Sato, Hongyi Li, and Tetsu Ichitsubo
    Nature Communications, Vol. 13, 1452(1-9) (2022).

  3. Metalloid substitution elevates simultaneously the strength and ductility of face-centered-cubic high-entropy alloys
    Daixiu Wei, Liqiang Wang, Yongjie Zhang, Wu Gong, Tomohito Turo, Ivan Lobzenko, Jing Jiang, Stefanus Harjo, Takuro Kawasaki, Jae Wung Bae, Wenjun Lu, Zhen Lu, Yuichiro Hayasaka, Takanori Kiguchi, Norihiko L. Okamoto, Tetsu Ichitsubo, Hyoung Seop Kim, Tadashi Furuhara, Evan Ma, and Hidemi Kato
    Acta Materialia, Vol. 225, 117571(1–16)  (2022).

  4. Thermal Stability of MnO2 polymorphs
    Takuya Hatakeyama, Norihiko L. Okamoto, and Tetsu Ichitsubo
    Journal of Solid State Chemistry, Vol. 305, 122683(1–10) (2022).

  5. Accelerated kinetics revealing metastable pathways of magnesiation-induced transformations in MnO2 polymorphs
    Takuya Hatakeyama, Hongyi Li, Norihiko L. Okamoto, Koei Shimokawa, Tomoya Kawaguchi, Hiroshi Tanimura, Susumu Imashuku, Maximilian Fichtner, and Tetsu Ichitsubo
    Chemistry Materials, Vol. 33, Issue 17, 6983–6996 (2021).

  6. Room-temperature deformation of single crystals of ZrB2 and TiB2 with the hexagonal AlB2 structure investigated by micropillar compression
    Zhenghao Chen, Bhaskar Paul, Sanjib Majumdar, Norihiko L. Okamoto, Kyosuke Kishida, Haruyuki Inui, and Shigeki Otani
    Scientific Reports, Vol. 11, 14265(1-11) (2021).

  7. Plastic Deformation of Single Crystals of CrB2, TiB2 and ZrB2 with the Hexagonal AlB2 Structure
    Bhaskar Paul, Norihiko L. Okamoto, Misato Kusakari, Zhenghao Chen, Kyosuke Kishida, Haruyuki Inui, and Shigeki Otani
    Acta Materialia, Vol. 211, 116857(1-16) (2021).

  8. On the possibility of simultaneously achieving sufficient oxidation resistance and creep property at high temperatures exceeding 1000°C in Co-based superalloys
    Zhenghao Chen, Norihiko L. Okamoto, Kazuyoshi Chikugo, and Haruyuki Inui
    Journal of Alloys and Compounds, Vol. 858, 157724 (1-13) (2021).

  9. Structure Design of Long-Life Spinel-Oxide Cathode Materials for Magnesium Rechargeable Batteries
    Kohei Shimokawa, Taruto Atsumi, Norihiko L. Okamoto, Tomoya Kawaguchi, Susumu Imashuku, Kazuaki Wagatsuma, Masanobu Nakayama, Kiyoshi Kanamura, and Tetsu Ichitsubo
    Advanced Materials, Vol. 2021, 2007539 (1-8) (2021).

  10. Evolution of microstructure and variations in mechanical properties accompanied with diffusionless isothermal ω transformation in β-titanium alloys
    Norihiko L. Okamoto, Shuhei Kasatani, Martin Luckabauer, Robert Enzinger, Satoshi Tsutsui, Masakazu Tane, Tetsu Ichitsubo
    Physical Review Materials, Vol. 4,123603 (2020).

  11. Plastic Deformation of Single Crystals of the Equiatomic Cr-Mn-Fe-Co-Ni High-Entropy Alloy in Tension and Compression from 10 K to 1273 K
    Marino Kawamura, Makoto Asakura, Norihiko L. Okamoto, Kyosuke Kishida, Haruyuki Inui, Easo P. George
    Acta Materialia, Vol. 203, 116454 (2021).

  12. Plastic deformation of single crystals of the δ1p and δ1k intermetallic compounds in the Fe–Zn system by micropillar compression
    Yukichika Hashizume, Masahiro Inomoto, Norihiko L. Okamoto, Haruyuki Inui
    International Journal of Plasticity, Vol. 136, 102889 (2021).

  13. Micropillar Compression Deformation of Single Crystals of the Intermetallic Compound Γ-Fe4Zn9
    Yukichika Hashizume, Masahiro Inomoto, Norihiko L. Okamoto, Hiroshi Takebayashi, and Haruyuki Inui
    Acta Materialia, Vol. 199, 514-522 (2020).

  14. Effects of solute oxygen on kinetics of diffusionless isothermal ω transformation in β-titanium alloys
    Norihiko L. Okamoto    , Shuhei Kasatani, Martin Luckabauer, Masakazu Tane, Tetsu Ichitsubo
    Scripta Materialia, Vol. 188, 88-91 (2020).

  15. Search for vacancies in concentrated solid-solution alloys with fcc crystal structure
    L. Resch, M. Luckabauer, N. Helthuis, N. L. Okamoto, T. Ichitsubo, R. Enzinger, W. Sprengel, R. Würschum
    Physical Review Materials, Vol. 4, 060601(R)(1-5) (2020). (Editors’ Suggestion)

  16. Circumventing huge volume strain in alloy anodes of lithium batteries
    Hongyi Li, Takitaro Yamaguchi, Shingo Matsumoto, Hiroaki Hoshikawa, Toshiaki Kumagai, Norihiko L. Okamoto and Tetsu Ichitsubo
    Nature Communications, Vol. 11, 1584(1-8) (2020).

  17. Electrochemical phase transformation accompanied with Mg extraction and insertion in a spinel MgMn2O4 cathode material
    Takuya Hatakeyama, Norihiko L. Okamoto, Koei Shimokawa, Hongyi Li, Aiko Nakao, Yoshiharu Uchimoto, Hiroshi Tanimura, Tomoya Kawaguchi, and Tetsu Ichitsubo
    Physical Chemistry Chemical Physics, Vol. 21, 23749–23757 (2019).

  18. Crystal Structure of η″-Fe3Al7+x Determined by Single-Crystal Synchrotron X-ray Diffraction Combined with Scanning Transmission Electron Microscopy
    Norihiko L. Okamoto    , Masaya Higashi, and Haruyuki Inui
    Science and Technology of Advanced Materials, Vol. 20, No. 1, 543–556 (2019).

  19. Zn-Based Spinel Cathode Materials for Magnesium Rechargeable Batteries: Toward Reversible Spinel–Rocksalt Transition
    Kohei Shimokawa, Taruto Atsumi, Maho Harada, Robyn E. Ward, Masanobu, Nakayama, Yu Kumagai, Fumiyasu Oba, Norihiko L. Okamoto, Kiyoshi Kanamura, and Tetsu Ichitsubo
    Journal of Materials Chemistry A, Vol. 7, 12225–12235 (2019).

  20. Diffusionless Isothermal Omega Transformation in Titanium Alloys Driven by Quenched-In Compositional Fluctuations
    Masakazu Tane, Hiroki Nishiyama, Akihiro Umeda, Norihiko L. Okamoto, Koji Inoue, Martin Luckabauer, Yasuyoshi Nagai, Tohru Sekino, Takayoshi Nakano, and Tetsu Ichitsubo 
    Physical Review Materials, Vol. 3, 043604(1-9) (2019). (Press Release)

  21. Feasible Transformation of MgCo2O4 from Spinel to Defect Rocksalt Structure under Electron Irradiation
    Norihiko L. Okamoto, Kohei Shimokawa, Hiroshi Tanimura, and Tetsu Ichitsubo
    Scripta Materialia, Vol. 167, 26–30 (2019).

  22. Fast Diffusion of Multivalent Ions Facilitated by Concerted Interactions in Dual-Ion Battery Systems
    Hongyi Li, Norihiko L. Okamoto, Takuya Hatakeyama, Yu Kumagai, Fumiyasu Oba and Tetsu Ichitsubo
    Advanced Energy Materials, Vol. 8, Issue 27, 1801475(1-8) (2018). (Press Release)

  23. Anisotropic Plastic Deformation of Single Crystals of the MAX Phase Compound Ti3SiC2 Investigated by Micropillar Compressions
    Masaya Higashi, Shogo Momono, Kyosuke Kishida, Norihiko L. Okamoto, and Haruyuki Inui
    Acta Materialia, Vol. 161, 161–170 (2018).

  24. Fracture Toughness of the Fe-Zn Intermetallic Compounds Measured by Bend Testing of Chevron-Notched Single-Crystal Microbeams
    Norihiko L. Okamoto, Shota Michishita, Yukichika Hashizume, and Haruyuki Inui
    ISIJ international, Vol. 58, No. 9, 1569–1577 (2018).

  25. Crystal Structures and Mechanical Properties of Fe-Zn Intermetallic Compounds Formed in the Coating Layer of Galvannealed Steels
    Haruyuki Inui, Norihiko L. Okamoto, and Shu Yamaguchi
    ISIJ international, Vol. 58, No. 9, 1550–1561 (2018).

  26. Crystal Structure Refinement of the Γ- and Γ1-Phase Compounds in the Fe-Zn System and Orientation Relationships among α-Fe, Γ and Γ1 Phases in the Coating Layer of Galvannealed Steel
    Norihiko L. Okamoto, Masahiro Inomoto, Hiroshi Takabayashi, and Haruyuki Inui
    Journal of Alloys and Compounds, Vol. 732, 52–63 (2018).

  27. FCC Metal-Like Deformation Behaviour of Ir3Nb with the L12 Structure
    Norihiko L. Okamoto, Shohei Takemoto, Zhenghao M. T. Chen, Masatake Yamaguchi, and Haruyuki Inui
    International Journal of Plasticity, Vol. 97, 145–158 (2017).

  28. Crystal Structure of η’-Fe3Al8; Low-Temperature Phase of η-Fe2Al5 Accompanied by an Ordered Arrangement of Al Atoms of Full Occupancy in the C-axis Chain Sites
    Norihiko L. Okamoto, Jumpei Okumura, Masaya Higashi, and Haruyuki Inui
    Acta Materialia, Vol. 129, 290–299 (2017).

  29. Atomic Displacement in the CrMnFeCoNi High-Entropy Alloy – A Scaling Factor to Predict Solid Solution Strengthening
    Norihiko L. Okamoto, Koretaka Yuge, Katsushi Tanaka, Haruyuki Inui, and Easo P. George
    AIP Advances, Vol. 6, Issue 12, 125008 (2016).

  30. Size Effect, Critical Resolved Shear Stress, Stacking Fault Energy, and Solid Solution Strengthening in the CrMnFeCoNi High-Entropy Alloy
    Norihiko L. Okamoto, Shu Fujimoto, Yuki Kambara, Marino Kawamura, Zhenghao M. T. Chen, Hirotaka Matsunoshita, Katsushi Tanaka, Haruyuki Inui, and Easo P. George
    Scientific Reports, Vol. 6, 35863 (2016). (Press Release)

  31. Micropillar Compression Deformation of Single Crystals of Co3(Al,W) with the L12 Structure
    Zhenghao M.T. Chen, Norihiko L. Okamoto, Masahiko Demura, and Haruyuki Inui
    Scripta Materialia, Vol. 121, 28–31 (2016).

  32. Crystal Structure Determination of the Γ2 Phase in the Fe-Zn-Al System by Single-Crystal Synchrotron X-ray Diffraction Combined with Scanning Transmission Electron Microscopy
    Norihiko L. Okamoto, Haruyuki Inui, Akira Yasuhara, and Shu Yamaguchi
    Journal of Alloys and Compounds, Vol. 644, 287–296 (2015).

     
  33. Appropriate Zone-Axis Orientations for the Determination of Crystal Polarity by Convergent-Beam Electron Diffraction (CBED)
    Katsushi Tanaka, Norihiko L. Okamoto, Satoshi Fujio, Hiroki Sakamoto, and Haruyuki Inui
    Journal of Applied Crystallography, Vol. 48, Part 3, 736–746 (2015).
     
  34. New Crystal Structure of Nd2Ni7 Formed on the Basis of Stacking of Block Layers
    Yuki Iwatake, Norihiko L. Okamoto, Kyosuke Kishida, Haruyuki Inui, Jun Ishida, Takuya Kai, and Shigekazu Yasuoka
    International Journal of Hydrogen Energy, Vol. 40, 3023–3034 (2015).
     
  35. Order-Disorder Structure of the δ1k Phase in the Fe-Zn System Determined by Scanning Transmission Electron Microscopy
    Norihiko L. Okamoto, Akira Yasuhara, and Haruyuki Inui
    Acta Materialia, Vol. 81, 345–357 (2014).

  36. Crystal Structure Refinement of the δ1p Phase in the Fe-Zn System by Single-Crystal X-ray Diffraction Combined with Scanning Transmission Electron Microscopy
    Norihiko L. Okamoto, Katsushi Tanaka, Akira Yasuhara and Haruyuki Inui
    Acta Crystallographica B, Vol. 70, Part 2, 275–282 (2014).

  37. Plastic Deformation of Single Crystals of Pt3Al with the L12 Structure Having a Far Al-Rich Off-Stoichiometric Composition of Pt-29at.%Al
    Norihiko L. Okamoto, Yoshihiko Hasegawa and Haruyuki Inui
    Philosophical Magazine, Vol. 94, Issue 12, 1327–1344 (2014).

  38. Specimen- and Grain-Size Dependence of Compression Deformation Behavior in Nanocrystalline Copper
    Norihiko L. Okamoto, Daisuke Kashioka, Tetsuji Hirato and Haruyuki Inui
    International Journal of Plasticity, Vol. 56, 173–183 (2014).

  39. Micropillar Compression Deformation of Single Crystals of the Intermetallic Compound ζ-FeZn13
    Norihiko L. Okamoto, Masahiro Inomoto, Hiroki Adachi, Hiroshi Takebayashi and Haruyuki Inui
    Acta Materialia, Vol. 65, 229–239 (2014). 

  40. Quantitative Z-Contrast Imaging of Supported Metal Complexes and Clusters—A Gateway to Understanding Catalysis on the Atomic Scale
    Nigel D. Browning, Ceren Aydin, Jing Lu, Apoorva Kulkarni, Norihiko L. Okamoto, Volkan Ortalan, Bryan W. Reed, Alper Uzun, and Bruce C. Gates
    ChemCatChem, Vol. 5, Issue 9, 2673–2683 (2013).

  41. Reduced Thermal Conductivity in Nanolamellar Composite Comprising Half-Heusler and NiAs-type Phases
    Ding-Bang Xiong, Norihiko L. Okamoto, and Haruyuki Inui
    Scripta Materialia, Vol. 69, Issue 7, 557–560 (2013).

  42. Enhanced Thermoelectric Figure of Merit in p-type Ag-doped ZnSb Nanostructured with Ag3Sb
    Ding-Bang Xiong, Norihiko L. Okamoto, and Haruyuki Inui
    Scripta Materialia, Vol. 69, Issue 5, 397–400 (2013).

  43. Compression Deformability of Γ and ζ Fe-Zn Intermetallics to Mitigate Detachment of Brittle Intermetallic Coating of Galvannealed Steels
    Norihiko L. Okamoto, Daisuke Kashioka, Masahiro Inomoto, Haruyuki Inui, Hiroshi Takabayashi, and Shu Yamaguchi
    Scripta Materialia, Vol. 69, Issue 4, 307–310 (2013).

  44. Plastic Deformation of Single Crystals of Pt3Al with the L12 Structure
    Norihiko L. Okamoto, Yoshihiko Hasegawa, Wataro Hashimoto, and Haruyuki Inui
    Philosophical Magazine, Vol. 93, Issue 1–3, 60–81 (2013).

  45. Direct Observation of Vacancies and Local Thermal Vibration in Thermoelectric Rhenium Silicide
    Shunta Harada, Katsushi Tanaka, Kyosuke Kishida, Norihiko L. Okamoto, Noriaki Endo, Eiji Okunishi, and Haruyuki Inui
    Applied Physics Express, Vol. 5, Issue 3, 035203 (2012).

  46. High-TC Ferromagnetic Semiconductor-Like Behavior and Unusual Electrical Properties in Compounds with a 2x2x2 Superstructure of the Half-Heusler Phase
    Ding-Bang Xiong, Norihiko L. Okamoto, Takeshi Waki, Yufeng Zhao, Kyosuke Kishida, and Haruyuki Inui
    Chemistry A European Journal, Vol. 18, Issue 9, 2536–2542 (2012).

  47. Plastic Deformation of Polycrystals of Co3(Al,W) with the L12 Structure
    Norihiko L. Okamoto, Takashi Oohashi, Hiroki Adachi, Kyosuke Kishida, Haruyuki Inui, and Patrick Veyssiere
    Philosophical Magazine, Vol. 91, Issue 28, 3667–3684 (2011).
    http://dx.doi.org/10.1080/14786435.2011.586158

  48. Planar Symmetry Incompatibility in Ru-Sn-Zn Pseudo-Decagonal Approximants Composed of Novel Pentagonal Antiprisms
    Ding-Bang Xiong, Norihiko L. Okamoto, and Haruyuki Inui
    Inorganic Chemistry, Vol. 50, Issue 3, 827–835 (2011).
    http://dx.doi.org/10.1021/ic101720m

  49. Triosmium Clusters on a Support: Determination of Structure by X-ray Absorption Spectroscopy and High-Resolution Microscopy
    Shareghe Mehraeen, Apoorva Kulkarni, Miaofang Chi, Bryan W. Reed, Norihiko L. Okamoto, Nigel D. Browning and Bruce C. Gates
    Chemistry-A European Journal,,Vol. 17, Issue 3, 1000–1008 (2011). http://dx.doi.org/10.1002/chem.201000860

  50. Complex Alloys Containing Double-Mackay Clusters and (Sb1-δZnδ)24 Snub Cubes Filled with Highly Disordered Zinc Aggregates: Synthesis, Structures, and Physical Properties of Ruthenium Zinc Antimonides
    Ding-Bang Xiong, Yufeng Zhao, Walter Schnelle, Norihiko L. Okamoto, and Haruyuki Inui
    Inorganic Chemistry, Vol. 49, Issue 23, 10788–10797 (2010).
    http://dx.doi.org/10.1021/ic101804m

  51. Ru9Zn7Sb8: A Structure with a 2x2x2 Supercell of the Half-Heusler Phase
    Ding-Bang Xiong, Yufeng Zhao, Norihiko L. Okamoto, Clemens Pietzonka, Takeshi Waki, and Haruyuki Inui
    Inorganic Chemistry, Vol. 49, Issue 22, 10536–10542 (2010).
    http://dx.doi.org/10.1021/ic1015669

  52. Effects of quaternary alloying elements on the γ’ solvus temperature of Co-Ao-W based alloys with fcc / L12 two-phase microstructures
    Masahiro Ooshima, Katsushi Tanaka, Norihiko L. Okamoto, Kyosuke Kishida and Haruyuki Inui
    Journal of Alloys and Compounds, Vol. 508, Issue 1, 71–78 (2010).
    http://dx.doi.org/10.1016/j.jallcom.2010.08.050

  53. Structural and Thermoelectric Properties of Chimney-Ladder Compounds in the Ru-Mn-Si System
    Norihiko L. Okamoto, Tatsuya Koyama, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Journal of Electronic Materials, Vol. 39, Number 9, 1640-1644 (2010).
    http://dx.doi.org/10.1007/s11664-010-1260-y

  54. Synthesis and Characterization of K8-x(H2)ySi46
    Doinita Neiner, Norihiko L. Okamoto, Ping Yu, Sharon Leonard, Cathie L. Condron, Michael F. Toney, Quentin M. Ramasse, Nigel D. Browning and Susan M. Kauzlarich
    Inorganic Chemistry, Vol. 49, Issue 3, 815-822 (2010).
    http://dx.doi.org/10.1021/ic9004592

  55. Pressure induced phase transformation of Ba8Ga16Ge30 clathrate studied by x-ray diffraction and Raman spectroscopy
    Tetsuji Kume, Satoshi Ohno, Shigeo Sasaki, Hiroyasu Shimizu, Yasuo Ohishi, Norihiko L. Okamoto, Kyosuke Kishida, Katsushi Tanaka, and Haruyuki Inui
    Journal of Applied Physics, Vol. 107, Issue 1, 013517 (2010).
    http://dx.doi.org/10.1063/1.3276153

  56. Anisotropic Elastic Constants and Thermal Expansivities in Monocrystal CrB2, TiB2, and ZrB2
    Norihiko L. Okamoto, Misato Kusakari, Katsushi Tanaka, Haruyuki Inui and Shigeki Otani
    Acta Materialia, Vol. 58, Issue 1, 76-84 (2010).
    http://dx.doi.org/10.1016/j.actamat.2009.08.058

  57. Validation and Generalization of a Method for Precise Size Measurements of Metal Nanoclusters on Supports
    B. W. Reed, D. G. Morgan, N. L. Okamoto, A. Kulkarni, B. C. Gates and N. D. Browning
    Ultramicroscopy, Vol. 110, Issue 1, 48-60 (2009).
    http://dx.doi.org/10.1016/j.ultramic.2009.09.005

  58. Crystal structure and thermoelectric properties of chimney-ladder compounds in the Ru2Si3-Mn4Si7 pseudobinary system
    Norihiko L. Okamoto, Tatsuya Koyama, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Acta Materialia, Vol. 57, Issue 17, 5036-5045 (2009).
    http://dx.doi.org/10.1016/j.actamat.2009.07.005

  59. Nearly Uniform Decaosmium Clusters Supported on MgO: Characterization by X-ray Absorption Spectroscopy and Scanning Transmission Electron Microscopy
    Apoorva Kulkarni, Shareghe Mehraeen, Bryan W. Reed, Norihiko L. Okamoto, Nigel D. Browning and Bruce C. Gates
    Journal of Physical Chemistry C, Vol. 113, Issue 30, 13377-13385 (2009).
    http://dx.doi.org/10.1021/jp903309d

  60. Thermoelectric properties of ternary and Al-containing quaternary Ru1-xRexSiy chimney-ladder compounds
    Kyosuke Kishida, Akira Ishida, Tatsuya Koyama, Shunta Harada, Norihiko L. Okamoto, Katsushi Tanaka and Haruyuki Inui
    Acta Materialia, Vol. 57, Issue 6, 2010-2019 (2009).
    http://dx.doi.org/10.1016/j.actamat.2008.12.039

  61. Evolution of orientation distributions of gamma and gamma’ phases during creep deformation of Ni-base single crystal superalloys
    Toru Inoue, Katsushi Tanaka, Hiroki Adachi, Kyosuke Kishida, Norihiko L. Okamoto, Haruyuki Inui, Tadaharu Yokokawa and Hiroshi Harada
    Acta Materialia, Vol. 57, Issue 4, 1078-1085 (2009).
    http://dx.doi.org/10.1016/j.actamat.2008.10.042

  62. Frank dislocation loops in HgTe/CdTe superlattices on CdTe/Si(211)B substrates
    L. F. Fu, N. L. Okamoto, M. F. Chi, N. D. Browning, H. S. Jung and C. H. Grein
    Journal of Applied Physics, Vol. 104, Issue 2, 023104 (2008).
    http://dx.doi.org/10.1063/1.2956687

  63. Mechanical and Thermal Properties of Single Crystals of the Type-I Clathrate Compounds Ba8Ga16Ge30 and Sr8Ga16Ge30
    Norihiko L. Okamoto, Takahiro Nakano, Katsushi Tanaka and Haruyuki Inui
    Journal of Applied Physics, Vol. 104, Issue 1, 013529 (2008).
    http://dx.doi.org/10.1063/1.2952004

  64. Determination of Nanocluster Sizes from Dark-Field Scanning Transmission Electron Microscopy Images
    Norihiko L. Okamoto, Bryan W. Reed, Shareghe Mehraeen, Apoorva Kulkarni, David G. Morgan, Bruce C. Gates and Nigel D. Browning
    Journal of Physical Chemistry C, Vol. 112, Issue 6, 1759-1763 (2008).
    http://dx.doi.org/10.1021/jp710959x

  65. Crystal and Defect Structures of La2/3-xLixTiO3(x~0.1) Produced by a Melt Process
    K. Kishida, M. Miyata, N. Wada, N. L. Okamoto, K. Tanaka, H. Inui, H. Koyama, T. Hattori, Y. Iriyama and Z. Ogumi
    Jouranl of Electron Microscopy, Vol. 56, Issue 6, 225-234 (2007).
    http://dx.doi.org/10.1093/jmicro/dfm031

  66. Crystal Structure and Thermoelectric Properties of Type-III Clathrate Compounds in the Ba-In-Ge System
    Jung-Hwan Kim, Norihiko L. Okamoto, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Journal of Applied Physics, Vol. 102, Issue 9, 094506 (2007).
    http://dx.doi.org/10.1063/1.2803745

  67. Hydrogen Encapsulation in a Silicon Clathrate Type-I Structure: Na5.5(H2.15) 2Si46: Synthesis and Characterization
    Doinita Neiner, Norihiko L. Okamoto, Cathie L. Condron, Quentin M. Ramasse, Ping Yu, Nigel D. Browning and Susan M. Kauzlarich
    Journal of the American Chemical Society, Vol. 129, 13857-13862 (2007).
    http://dx.doi.org/10.1021/ja0724700

  68. Thermoelectric Properties and Crystal Structure of Type-III Clathrate Compounds in the Ba-Al-Ge System
    Jung-Hwan Kim, Norihiko L. Okamoto, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Journal of Applied Physics, Vol. 102, Issue 3, 034510 (2007).
    http://dx.doi.org/10.1063/1.2768040

  69. Chemistry of Tantalum Clusters in Solution and on SiO2 Supports: Analogies and Contrasts
    Sailendra Nemana, Norihiko L. Okamoto, Nigel D. Browning and Bruce C. Gates
    Langmuir, Vol. 23, 8845-8854 (2007).
    http://dx.doi.org/10.1021/la063769j

  70. Effect of In Additions on the Thermoelectric Properties of the Type-I Clathrate Compound Ba8Ga16Ge30
    Norihiko L. Okamoto, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Journal of Applied Physics, Vol. 101, Issue 11, 113525 (2007).
    http://dx.doi.org/10.1063/1.2768040

  71. Splitting of guest atom sites and lattice thermal conductivity of type-I and type-III clathrate compounds in the Ba-Ga-Ge system
    Norihiko L. Okamoto, Jung-Hwan Kim, Katsushi Tanaka and Haruyuki Inui
    Acta Materialia, Vol. 54, No. 20, 5519-5528 (2006).
    http://dx.doi.org/10.1016/j.actamat.2006.08.020

  72. Crystal structure and thermoelectric properties of type-I clathrate compounds in the Ba-Ga-Ge system
    Norihiko L. Okamoto, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Journal of Applied Physics, Vol. 100, Issue 7, 073504 (2006).
    http://dx.doi.org/10.1063/1.2355443

  73. Formation of a series of chimney-ladder compounds in the Ru-Re-Si system
    Benjamin A. Simkin, Akira Ishida, Norihiko L. Okamoto, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Acta Materialia, Vol. 54, No. 10, 2857-2865 (2006).
    http://dx.doi.org/10.1016/j.actamat.2006.02.022

  74. High thermoelectric performance of type-III clathrate compounds of the Ba-Ge-Ga system
    Jung-Hwan Kim, Norihiko L. Okamoto, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Acta Materialia, Vol. 54, No. 8, 2057-2062 (2006).
    http://dx.doi.org/10.1016/j.actamat.2005.12.032

  75. Crystal structure and thermoelectric properties of the type-I clathrate compound Ba8Ge43 with an ordered arrangement of Ge vacancies
    Norihiko L. Okamoto, Min Wook Oh, Takumi Nishii, Katsushi Tanaka and Haruyuki Inui
    Journal of Applied Physics, Vol. 99, Issue 3, 033513 (2006).
    http://dx.doi.org/10.1063/1.2169869

  76. Crystal structure refinement of a type-I clathrate compound Ba8Ge43 with an ordered arrangement of germanium vacancies
    Norihiko L. Okamoto, Katsushi Tanaka and Haruyuki Inui
    Acta Materialia, Vol. 54, No. 1, 173-178 (2006).
    http://dx.doi.org/10.1016/j.actamat.2005.08.038

  77. Defect structures in co-sputtered thin films of transition-metal disilicides with C11b, C40 and C54 structures
    Haruyuki aInui, Takashi Hashimoto, Akihiro Fujii, Hiroki Sakamoto, Norihiko L. Okamoto, Katsushi Tanaka, and Masaharu Yamaguchi
    Metallurgical nd Materials Transactions A, Vol. 35A, No. 8, 2229-2238 (2004). http://dx.doi.org/10.1007/s11661-006-0202-z

  78. Plastic deformation of single crystals of TiSi2 with the C54 structure
    H. Inui, M. Moriwaki, N. Okamoto, and M. Yamaguchi
    Acta Materialia, Vo‚Œ. 51, No. 5, 1409-1420 (2003).
    http://dx.doi.org/10.1016/S1359-6454(02)00533-5

  79. {101}<101>twins in Mo-doped TiSi2 thin films with the C54 structure
    Haruyuki Inui, Norihiko L. Okamoto, Takashi Hashimoto, Katsushi Tanaka, and Masaharu Yamaguchi
    Philosophical Magazine A, Vol. 83, No. 12, 1463-1478 (2003).
    http://dx.doi.org/10.1080/1478643031000076604

  80. Temperature dependence of thermal expansion and elastic constants of single crystals of ZrB2 and the suitability of ZrB2 as a substrate for GaN film
    Norihiko L. Okamoto, Misato Kusakari, Katsushi Tanaka, Haruyuki Inui, Masaharu Yamaguchi, and Shigeki Otani
    Journal of Applied Physics, Vol. 93, Issue 1, 88-93 (2003).
    http://dx.doi.org/10.1063/1.15540

Journal Papers (in Japanese)

  1. 多価カチオンを利用した新型蓄電デバイス開発に向けた基礎的研究
    李弘毅, 下川航平, 岡本範彦, 市坪哲
    日本金属学会会報誌まてりあ 第59巻, 第8号, 413–421頁 (2020).

  2. 「ホットスタンプGAの焼戻しによるめっき構造の変化及び耐食性に及ぼす影響 」
    仙石晃大, 竹林浩史, 岡本範彦, 乾 晴行
    鉄と鋼  第105巻, 第8号, 819–826 (2019).

  3. 「FCC型等原子量ハイエントロピー合金の平均原子変位と強度特性」
    岡本範彦, 弓削是貴, 乾 晴行
    日本金属学会会報誌「まてりあ」 第57巻, 第7号, 312–316 (2018).

  4. 「ホットスタンプ加熱過程における合金化溶融亜鉛めっき構造の変化 」
    仙石晃大, 竹林浩史, 岡本範彦, 乾 晴行
    鉄と鋼  第104巻, 第6号, 331-337 (2018).

  5. 「合金化溶融亜鉛めっき鋼板皮膜を構成するFe-Zn系金属間化合物の結晶構造と力学特性」
    岡本範彦, 乾 晴行
    日本金属学会会報誌「まてりあ」 第57巻, 第4号, 169–175 (2018).

  6. 「高エントロピー合金の塑性変形挙動と単結晶マイクロピラー圧縮試験法による固溶強化量測定 」
    岡本範彦, 乾 晴行
    特集『注目の新規金属材料「高エントロピー合金」』
    日本機械学会誌 第121巻, 第1192号, 12–15 (2018).

  7. 「異相界面制御によるチムニーラダーシリサイドの熱電特性向上」(解説記事)
    岡本範彦, 乾 晴行
    粉体および粉末冶金, 第59巻, 第4号, 175–179 (2012).

  8. 「PBET界面制御によるチムニーラダー化合物の熱電特性改善」
    岡本範彦, 足立 大樹, 岸田 恭輔, 田中 克志, 乾 晴行
    ミニ特集企画『「熱を電気に直接変換」熱電変換材料の現状と将来像』
    日本金属学会会報誌「まてりあ」 第50巻第4号, 149–151 (2011).

  9. 「水素吸蔵シリコンクラスレート化合物の構造解析」
    岡本範彦, Q. M. Ramasse, D. G. Morgan, D. Neiner, S. M. Kauzlarich, N. D. Browning
    特集「顕微鏡法による材料開発のための微細構造研究最前 線(9)」
    日本金属学会会報誌「まてりあ」 第48巻第12号, 592 (2009).

  10. 最近の研究「Ba-Ga-Ge系クラス レート化合物における内包原子の原子変位パラメータと格子熱伝導率」
    岡本範彦, 金正煥, 田中克志, 乾晴行
    日本金属学会会報誌「まてりあ」 第46巻第7号, 487–491頁(2007).

  11. 「ク ラスレート化合物Ba8Ge43の空孔規則配列」
    岡本範彦, 田中克志, 乾晴行
    特集「電子顕微鏡法による材料開発のための微細構造研究最前線(5)」
    日本金属学会会報誌「まてりあ」 第44巻第12号, 968頁 (2005).

Books

  1. The Application of Scanning Transmission Electron Microscopy (STEM) to the study of Nanoscale Systems
    Nigel D. Browning, James Buban, M. Chi, B. Gipson, M. Herrera, D. J. Masiel, S. Mehraeen, D. G. Morgan, Norihiko L. Okamoto, Quentin M. Ramasse, B. W. Reed, H. Stahlberg
    in Modeling Nanoscale Imaging in Electron Microscopy, Thomas Vogt, Wolfgang Dahmen, Peter Binev (Eds.)
    (Nanostructure Science and Technology, Springer US, 2012) pp. 11-40.
    http://dx.doi.org/10.1007/978-1-4614-2191-7_2

  2. PBET界面制御による熱電材料の高性能化
    岡本範彦, 乾 晴行
    『熱電変換技術の基礎と応用－クリーンなエネルギー社会を目指して－』
    編纂：日本熱電学会, 編集：舟橋良次, 木村薫, 黒崎健, 竹内恒博
    CMC出版, 第3章, 第11節, 116-121頁 (2011).

Conference Proceedings (4 pages or more)

  1. Microscale Deformation of the Γ and δ1p Phases in the Fe-Zn System
    Yukichika Hashizume, Norihiko L. Okamoto, and Haruyuki Inui
    GALVATECH 2017, pp. 981–985 (2017).

  2. Plastic Deformation and Fracture Behavior of Single Crystals of the Intermetallic Compounds in the Fe-Zn System
    Norihiko L. Okamoto, Yukichika Hashizume, Shota Michishita, and Haruyuki Inui
    GALVATECH 2017, pp. 200–203 (2017).

  3. Crystal Structure and Mechanical Properties of Intermetallic Compounds in the Fe-Zn System in the Coat Layer of Galvanized Steel
    Haruyuki Inui, and Norihiko L. Okamoto
    GALVATECH 2017,  pp. 6–10 (2017).

  4. Lamellar structure formation of hot-stamped galvannealed coating during tempering
    Akihiro Sengoku, Hiroshi Takebayashi, Norihiko Okamoto, and Haruyuki Inui
    6th International Conference Hot Steel Metal Forming of High-Performance Steel, CHS2 2017- Proceedings, pp. 121–129 (2017).

  5. Effects of Alloying Elements on the Temperature Dependence of Yield Stress in L12-Co3(Al,W)
    Zhenghao M. T. Chin, Norihiko L. Okamoto and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1760 (2015). http://dx.doi.org/10.1557/opl.2015.161

  6. Factors Controlling the Temperature Dependence of Yield Stress in L12-Ordered Intermetallic Compounds
    Haruyuki Inui and Norihiko L. Okamoto
    Materials Research Society Symposium Proceedings, Vol. 1760 (2015). http://dx.doi.org/10.1557/opl.2015.27

  7. Arrangements of Fe-Centered Zn12 Icosahedra in Fe-Zn Intermetallic Compounds Determined by Ultra-High Resolution Scanning Transmission Electron Microscopy
    Norihiko L. Okamoto, Akira Yasuhara, Katsushi Tanaka and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1760 (2015). http://dx.doi.org/10.1557/ opl.2015.10

  8. Compression Compression of Single-Crystal Micropillars of the Γ Intermetallic Phase in the Fe-Zn System
    Masahiro Inomoto, Norihiko L. Okamoto and Haruyuki Inui
    Advanced Materials Research, Vol. 922, 264–269 (2014). http://dx.doi.org/0.4028/www.scientific.net/AMR.922.264

  9. Difference in Elastic Properties of CrB2 Determined by Microscopic and Macroscopic Measurements
    Katsushi Tanaka, Satoshi Tsutsui, Norihiko L. Okamoto, Haruyuki Inui and Alfred Q.R. Baron
    Materials Research Society Symposium Proceedings, Vol. 1528 (2013). http://dx.doi.org/10.1557/opl.2013.362

  10. Micropillar Compression Deformation of Fe-Zn Intermetallic Compounds in the Coating Layer of Galvannealed Steel
    Norihiko L. Okamoto, Daisuke Kashioka and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1516, 283–288 (2013). http://dx.doi.org/10.1557/opl.2012.1752

  11. Compression Deformation of Single-Crystal Pt3Al with the L12 Structure
    Yoshihiko Hasegawa, Norihiko L. Okamoto, and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1516, 177–182 (2013). http://dx.doi.org/10.1557/opl.2013.359

  12. Compression of Single-Crystal Micropillars of the ζ Intermetallic Phase in the Fe-Zn System
    Masahiro Inomoto, Norihiko L. Okamoto, Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1516, 157–162 (2013). http://dx.doi.org/10.1557/opl.2012.1667

  13. Investigation of Specimen- and Grain-Size Dependence of Yield Stress in Electrodeposited Nanocrystalline Copper through Micropillar Compression
    Norihiko L. Okamoto, Daisuke Kashioka and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1513 (2013). http://dx.doi.org/10.1557/opl.2013.559

  14. Mechanical Properties of the Ternary L12 Compound Co3(Al,W) in Single and Polycrystalline Forms
    Haruyuki Inui, Takashi Oohashi, Norihiko L. Okamoto, Kyosuke Kishida and Katsushi Tanaka
    Advanced Materials Research, Vol. 278, 1–6 (2011).  http://dx.doi.org/10.4028/www.scientific.net/AMR.278.1

  15. Morphology Change of γ’ Precipitates in γ / γ’ Two-phase Microstructure in Co-based Superallloys by Higher-order Alloying
    Katsushi Tanaka, Masahiro Ooshima, Norihiko L. Okamoto, Kyosuke Kishida and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1295, mrsf10-1295-n08-06 (2011). http://dx.doi.org/10.1557/opl.2011.191

  16. Temperature Dependence of Yield Stress and Dislocation Dissociation in L12-Ordered Intermetallic Compounds
    Haruyuki Inui and Norihiko L. Okamoto
    Materials Research Society Symposium Proceedings, Vol. 1295, mrsf10-1295-n08-01 (2011). http://dx.doi.org/10.1557/opl.2011.460

  17. Direct Observation of an Ordered Arrangement of Vacancies and Large Local Thermal Vibration in Rhenium Silicide by Cs-corrected STEM
    Shunta Harada, Katsushi Tanaka, Kyosuke Kishida, Norihiko L. Okamoto, Haruyuki Inui, Noriaki Endo and Eiji Okunishi
    Materials Research Society Symposium Proceedings, Vol. 1295, mrsf10-1295-n07-11 (2011). http://dx.doi.org/10.1557/opl.2011.43

  18. Physical and Mechanical Properties of Co3(Al,W) with the L12 Structure in Single and Polycrystalline Forms
    Haruyuki Inui, Takashi Oohashi, Norihiko L. Okamoto, Kyosuke Kishida and Katsushi Tanaka
    Key Engineering Materials, Vol. 465, Vol. 465, 9–14 (2011). http://dx.doi.org/10.4028/www.scientific.net/KEM.465.9

  19. Physical and Mechanical Properties of Single Crystals of Co-Al-W Based Alloys with L12 Single-phase and L12/fcc Two-phase Microstructures
    Haruyuki Inui, Takashi Oohashi, Norihiko L. Okamoto, Kyosuke Kishida and Katsushi Tanaka
    Materials Science Forum, Vol. 638–642, 1342–1347 (2010). http://dx.doi.org/10.4028/www.scientific.net/MSF.638-642.1342

  20. Improvement of the Thermoelectric Properties of the Chimney-Ladder Compounds in the Ru-Mn-Si System
    Norihiko L. Okamoto, Yutaka Hashimoto, Tatsuya Koyama, Hiroki Adachi, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1218E, Z06–09 (2010).

  21. Plastic Deformations in Single Crystals of FePd with the L10 structure
    Katsushi Tanaka, Chen Wang, Kyosuke Kishida, Norihiko L. Okamoto and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1128, 543-548 (2009).

  22. Plastic Deformation of Ti5Si3 Single Crystals
    Kyosuke Kishida, Masakazu Fujiwara, Norihiko L. Okamoto, Katsushi Tanaka and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1128, 537-542 (2009).

  23. Physical and Mechanical Properties of Single Crystals of Co-Al-W Based Alloys with L12 Single-Phase and L12/fcc Two-Phase Microstructures
    Haruyuki Inui, Katsushi Tanaka, Kyosuke Kishida, Norihiko L. Okamoto and Takashi Oohashi
    Materials Research Society Symposium Proceedings, Vol. 1128, 369-374 (2009).

  24. Influence of Elastic Properties on the Morphology of the γ’ Precipitates in Ni-base Superalloys
    Wataro Hashimoto, Katsushi Tanaka, Kyosuke Kishida, Norihiko L. Okamoto and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1128, 227-232 (2009).

  25. Microstructures and Mechanical Properties of Co3(Al,W) with the L12 Structure
    Takashi Oohashi, Norihiko L. Okamoto, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1128, 221-226 (2009).

  26. Processing, Microstructure, and Thermal Expansion Measurements for High Temperature Ru-Al-Cr B2 Alloys
    Yutaka Hashimoto, Norihiko L. Okamoto, Manuel Acosta, David R. Johnson and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1128, 215-220 (2009).

  27. Crystal Structure and Thermoelectric Properties of Mn-Substituted Ru2Si3 with the Chimney-Ladder Structure
    Tatsuya Koyama, Norihiko L. Okamoto, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1128, 173-178 (2009).

  28. Mechanical and Thermal Properties of Single Crystals of Some Thermoelectric Clathrate Compounds
    Norihiko L. Okamoto, Takahiro Nakano, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1128, 27-32 (2009).

  29. Change in the Thermoelectric Properties with the Variation in the Defect Structure of ReSi1.75
    Shunta Harada, Katsushi Tanaka, Kyosuke Kishida, Norihiko L. Okamoto and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 1128, 9-14 (2009).

  30. Orientation Dependence of Microstructure and Electrochemical Properties of LiCoO2 Cathode Films Deposited on Single-Crystalline La2/3-xLi3xTiO3
    Kengo Goto, Kyosuke Kishida, Yuji Yamaguchi, Norihiko L. Okamoto, Katsushi Tanaka, Haruyuki Inui, Yasutoshi Iriyama and Zempachi Ogumi
    Materials Research Society Symposium Proceedings, Vol. 1126, S3.22 (2009).

  31. Crystal structure and atomic vibration of Ba-Ge based type-III clathrate compounds
    Jung-Hwan Kim, Norihiko L. Okamoto, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Proceedings of the 26th International Conference on Thermoelectrics, 215-218 (2008).

  32. Crystal Structures and Thermoelectric Properties of Ru1-xRexSiy Chimney-Ladder Compounds
    Akira Ishida, Norihiko L. Okamoto, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 980, 235-240 (2007).

  33. Thermoelectric Properties of Ba-Ge Based Type-III Clathrate Compounds
    Jung-Hwan Kim, Norihiko L. Okamoto, Kyosuke Kishida, Katsushi Tanaka and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 980, 217-222 (2007).

  34. Effect of Ga-doping on the Thermoelectric Properties of Ba-Ge Type-III Clathrate Compounds
    Jung-Hwan Kim, Norihiko L. Okamoto, Katsushi Tanaka and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 886, 413-418 (2006).

  35. Splitting of guest atom sites and lattice thermal conductivity in Ba-Ga-Ge clathrate compounds
    Norihiko L. Okamoto, Katsushi Tanaka and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 886, 407-412 (2006).

  36. Effects of Ga- and In-doping on the thermoelectric properties in Ba-Ge clathrate compounds
    Norihiko L. Okamoto and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 842, 419-424 (2005).

  37. Structural analysis and thermoelectric properties of Type-I clathrate compounds in the Ba-Ge-Ga system
    Norihiko L. Okamoto, Takumi Nishii, Min Wook Oh, and Haruyuki Inui
    Materials Research Society Symposium Proceedings, Vol. 793, 187-202 (2004).

  38. Mechanical and thermal properties of single crystals of ZrB2
    Norihiko L. Okamoto, Misato Kusakari, Katsushi Tanaka, Haruyuki Inui, Masaharu Yamaguchi, and Shigeki Otani
    Materials Research Society Symposium Proceedings, Vol. 753, 83-88 (2003).

  39. Synthesis of Single Crystals and Some Physical Properties of Boron Carbide
    Norihiko Okamoto, Haruyuki Inui, and Masaharu Yamaguchi
    The Fourth Pacific Rim International Conference on Advanced Materials and Processing (PRICM4) Vol. I, 987-990 (2001).

inserted by FC2 system