Hiroki Moriwake (Group Leader, JFCC)

_images/moriwake.png

Nanosimulation Group, Nanostructures Research Laboratory

Japan Fine Ceramics Center

2-4-1 Mutsuno, Atsuta, Nagoya, 456-8587, JAPAN

moriwakeatjfcc.or.jp

Research Interests

  • Materials science
  • First-principles calculations
  • Ferroelectric
  • Li-ion battery materials
  • Electronic materials
  • Industrial materials

Journal Publications

  1. The electric field induced ferroelectric phase transition of AgNbO3

    Hiroki Moriwake, Craig A. J. Fisher, Takafumi Ogawa, Akihide Kuwabara, and Desheng Fu

    1. Appl. Phys., 119 (2016) 064102.
  2. Electrical susceptibilities of KNbO3 by molecular dynamics simulations using a shell model

    Tamotsu Hashimoto, Hiroki Moriwake

    Physica B 485 (2016) 110?115.

  3. Piezoelectric anisotropy of KNbO3 by molecular dynamics simulations using a shell model

    Tamotsu Hashimoto, Hiroki Moriwake

    1. Phys. Soc. Jap. 85 (2016) 034702.
  4. Dielectric properties of BaTiO3 by molecular dynamics simulations using a shell model

    Tamotsu Hashimoto, Hiroki Moriwake

    MOLECULAR SIMULATION. 41 (2015) 1074-1080.

  5. Cation ordering in A-site-deficient Li-ion conducting perovskites La(1-x)/3LixNbO3

    Xiang Gao, Craig A. J. Fisher, Yumi H. Ikuhara, Yasuyuki Fujiwara, Shunsuke Kobayashi, Hiroki Moriwake, Akihide Kuwabara, Keigo Hoshikawa, Keiichi Kohama, Hideki Iba and Yuichi Ikuhara

    1. Mater. Chem. A, 3 (2015), 3351?3359.
  6. An alternative description of mass transfer through thick oxide films

    Takafumi Ogawa, Satoshi Kitaoka, Akihide Kuwabara, Craig A.J. Fisher, Hiroki Moriwake

    Scripta Materialia 100 (2015) 66-69.

  7. Domain boundaries and their influence on Li migration in solid-state electrolyte (La,Li)TiO3

    Hiroki Moriwake, Xiang Gao, Akihide Kuwabara, Craig A.J. Fisher, Teiichi Kimura, Yumi H. Ikuhara, Keiichi Kohama, Takeshi Tojigamori, Yuichi Ikuhara

    Journal of Power Sources 276 (2015) 203-207.

  8. Structural Distortion and Compositional Gradients Adjacent to Epitaxial LiMn2O4 Thin Film Interfaces

    Xiang Gao, Yumi H. Ikuhara, Craig A. J. Fisher, Hiroki Moriwake, Akihide Kuwabara, Hideki Oki, Keiichi Kohama , Ryuji Yoshida, Rong Huang, and Yuichi Ikuhara

    Adv. Mater. Interfaces (2014), 1400143.

  9. Epitaxial Growth of LiMn2O4 Thin Films by Chemical Solution Deposition for Multilayer Lithium-Ion Batteries

    Yumi H. Ikuhara, Xiang Gao, Rong Huang, Craig A. J. Fisher, Akihide Kuwabara, Hiroki Moriwake, and Keiichi Kohama

    1. Phys. Chem. C (2014) 118 19540?19547. DOI: 10.1021/jp504305q.
  10. A Density Functional Study of Oxygen Adatoms on a Step-Doubled Platinum Surface

    Takafumi Ogawa, Akihide Kuwabara, Craig A. J. Fisher, and Hiroki Moriwake

    1. Phys. Chem. C (2014), 118, 23675?23681, dx.doi.org/10.1021/jp504523g.
  11. Dielectric properties of BaTiO3 by molecular dynamics simulations using a shell model

    Tamotsu Hashimoto, Hiroki Moriwake

    Molecular Simulation, (2014) DOI: 10.1080/08927022.2014.938067.

  12. Photo-induced change of dielectric response in BaCoSiO4 stuffed tridymite

    Hiroki Taniguchi, Hiroki Moriwake, Akihide Kuwabara, Takuma Okamura, Takafumi Yamamoto, Ryuji Okazaki, Mitsuru Itoh, and Ichiro Terasaki

    1. Appl. Phys. 115, 164103 (2014).
  13. Systematic calculations of On (n=1 to 6) polytypes of LiCoO2

    Craig A. J. Fisher, Akihide Kuwabara, Hiroki Moriwake, Hideki Oki, Keiichi Kohama, and Yuichi Ikuhara

    Phys. Status Solidi RRL 8, 545?548. (2014) / DOI 10.1002/pssr.201409167.

  14. Ferroelectricity in Wurtzite Structure Simple Chalcogenide

    Hiroki Moriwake, Ayako Konishi, Takafumi Ogawa, Koji Fujimura, Craig A. J. Fisher, Akihide Kuwabara, Takao Shimizu, Shintaro Yasui, Mitsuru Itoh

    Appl. Phys. Lett., 104, 242909 (2014); doi: 10.1063/1.4884596.

  15. Impact of local strain on Ti-L2,3 electron energy-loss near-edge structures of BaTiO3: a first-principles multiplet study

    Shirou Ootsuki, Hidekazu Ikeno, Yuji Umeda, Yu Yonezawa, Hiroki Moriwake, Akihide Kuwabara, Osamu Kido, Satoko Ueda, Isao Tanaka, Yoshinori Fujikawa, and Teruyasu Mizoguchi

    Microscopy, 63 (2014) 249-253.

  16. A density functional study of vacancy formation in grain boundaries of undoped a-alumina

    Takafumi Ogawa, Akihide Kuwabara, Craig A.J. Fisher , Hiroki Moriwake, Katsuyuki Matsunaga, Kenji Tsuruta, Satoshi Kitaoka

    Acta Materialia 69 (2014) 365?371.

  17. An Improved Method for Quantitatively Predicting the Electrochemical Stabilities of Organic Liquid Electrolytes Using Ab Initio Calculations

    Hiroyuki Maeshima, Hiroki Moriwake, Akihide Kuwabara, Craig A. J. Fisher, and Isao Tanaka

    Journal of The Electrochemical Society, 161 (2014) G7-G14.

  18. Domain boundary structures in lanthanum lithium titanates

    Xiang Gao, Craig A. J. Fisher, Teiichi Kimura, Yumi H. Ikuhara, Akihide Kuwabara, Hiroki Moriwake, Hideki Oki, Takeshi Tojigamori, Keiichi Kohama and Yuichi Ikuhara

    1. Mater. Chem. A , 2 (2014), 843-852.
  19. Antiphase inversion domains in lithium cobaltite thin films deposited on single-crystal sapphire substrate

    S.J. Zheng, Craig A.J. Fisher, Taro Hitosugi, A. Kumatani, S. Shiraki , Yumi H. Ikuhara, Akihide Kuwabara, Hiroki Moriwake, Hideki Oki, Yuichi Ikuhara

    Acta Materialia, 61 (2013) 7671?7678.

  20. Adsorption and Diffusion of Oxygen Atoms on a Pt(211) Stepped Surface

    Takafumi Ogawa, Akihide Kuwabara, Craig A. J. Fisher, Hiroki Moriwake, and Tomohiro Miwa

    1. Phys. Chem. C, 117 (2013) 9772?9778.
  21. First-Principles Study of Point Defect Formation in AgNbO3

    Hiroki Moriwake, Craig A. J. Fisher, Akihide Kuwabara, and Desheng Fu

    Jpn. J. Appl. Phys., 52 (2013) 09KF08.

  22. Impact of Lithium-Ion Ordering on Surface Electronic States of LixCoO2

    1. Iwaya, Takafumi. Ogawa, T. Minato, K. Miyoshi, J. Takeuchi, Akihide. Kuwabara, Hiroki Moriwake, Y. Kim, and Taro Hitosugi

    Phys. Rev. Lett. 111, (2013) 126104.

  23. Ferroelectricity Driven by Twisting of Silicate Tetrahedral Chains

    Hiroki Taniguchi, Akihide Kuwabara, Jungeun Kim, Younghun Kim, Hiroki Moriwake, Sungwng Kim, Takuya Hoshiyama, Tsukasa Koyama, Shigeo Mori, Masaki Takata, Hideo Hosono, Yoshiyuki Inaguma, and Mitsuru Itoh

    Angew. Chem. Int. Ed. 52 (2013) 8088 ?8092.

  24. Investigation of PbTiO3 thin films with reduced and re-oxidized treatment using Raman spectroscopy

    Ken NISHIDA, Minoru OSADA, Hiroki MORIWAKE, Joe SAKAI, Nobuaki ITO, Masamichi NISHIDE, Hirotaka OKA, Masashi MATSUOKA, Rikyu IKARIYAMA, Hiroshi FUNAKUBO, Takashi KATODA and Takashi YAMAMOTO

    1. Ceram. Soc. Jpn. 121 (2013) 859-862.
  25. Oxygen vacancies in PbTiO3 thin films probed by resonant Raman spectroscopy

    Ken NISHIDA, Minoru OSADA, Joe SAKAI, Nobuaki ITO, Takashi KATODA, Rikyu IKARIYAMA, Hiroshi FUNAKUBO, Hiroki MORIWAKE and Takashi YAMAMOTO

    1. Ceram. Soc. Jpn. 121 (2013) 598-601.
  26. Accelerated Materials Design of Lithium Superionic Conductors Based on First-Principles Calculations and Machine Learning Algorithms

    Koji Fujimura, Atsuto Seko, Yukinori Koyama, Akihide Kuwabara, Ippei Kishida, Kazuki Shitara, Craig A. J. Fisher, Hiroki Moriwake and Isao Tanaka

    1. Energy Mater. 3 (2013), 980?985. DOI: 10.1002/aenm.201300060.
  27. Lithium Atom and A-Site Vacancy Distributions in Lanthanum Lithium Titanate

    Xiang Gao, Craig A. J. Fisher, Teiichi Kimura, Yumi H. Ikuhara, Hiroki Moriwake, Akihide Kuwabara, Hideki Oki, Takeshi Tojigamori, Rong Huang, and Yuichi Ikuhara

    Chem. Mater., 25, (2013) 1607?1614.

  28. First-Principles Calculations of Lithium-Ion Migration at a Coherent Grain Boundary in a Cathode Material, LiCoO2

    Hiroki Moriwake, Akihide Kuwabara ,Craig A. J. Fisher, Rong Huang, Taro Hitosugi, Yumi H. Ikuhara, Hideki Oki, and Yuichi Ikuhara

    Adv. Mater. 25 (2013), 618?622, DOI: 10.1002/adma.201202805.

  29. The influence of charge ordering on the phase stability of spinel LiNi2O4

    Akihide Kuwabara, Craig A. J. Fisher, Yumi H. Ikuhara, Hiroki Moriwake, Hideki Oki and Yuichi Ikuhara

    RSC Advances, 2 (2012) 12940?12948.

  30. Effect of Ca-Substitution on CdTiO3 Studied by Raman Scattering and First Principles Calculations

    Hiroki Taniguchi, Soon, Hwee Ping, Hiroki Moriwake, Shan, Yue Jin, Mitsuru Itoh

    FERROELECTRICS, 426 (2012) 268-273.

  31. First-Principles Study on Relaxor-Type Ferroelectric Behavior without Chemical Inhomogeneity in BaTaO2N and SrTaO2N

    Yoyo Hinuma, Hiroki Moriwake, Ya-Ru Zhang, Teruki Motohashi, Shinichi Kikkawa, and Isao Tanaka

    Chem. Mater. 24 (2012) 4343?4349.

  32. Theoretical Analysis of Oxygen Vacancy Formation in Zr-Doped BaTiO3

    Yuji Umeda, Kosuke Takano, Takashi Kojima, Akihide Kuwabara, and Hiroki Moriwake

    Jpn. J. Appl. Phys., 51 (2012) 09LE01.

  33. A First-Principles Study of the Ferroelectric Phase of AgNbO3

    Hiroki Moriwake, Craig A. J. Fisher, Akihide Kuwabara and Desheng Fu

    Jpn. J. Appl. Phys., 51 (2012) 09LE02.

  34. A High Coincidence Twin Boundary in Lithium Battery Material LiCoO2

    Craig A. J. Fisher, Rong Huang, Taro Hitosugi, Hiroki Moriwake, AkihideKuwabara, Yumi H. Ikuhara, Hideki Oki, and Yuichi Ikuhara

    NANOSCIENCE AND NANOTECHNOLOGY LETTERS 4, (2012)165?168.

  35. Phase transitions in LiCoO2 thin films prepared by pulsed laser deposition

    Rong Huang, Taro Hitosugi, Craig A.J. Fisher, Yumi H. Ikuhara, Hiroki Moriwake, Hideki Oki, Yuichi Ikuhara

    Materials Chemistry and Physics 133 (2012) 1101? 1107.

  36. Theoretical and experimental analysis for site preference of rare earth elements in BaTiO3

    Yuji. Umeda, K. Masuzawa, S. Ueda, S. Ootsuki, Akihide Kuwabara, Hiroki Moriwake

    Ceramics International 38S (2012) S25?S28.

  37. Mechanism for suppression of ferroelectricity in Cd1xCaxTiO3

    Hiroki Taniguchi, Hwee Ping Soon, Takao Shimizu, Hiroki Moriwake, Yue Jin Shan, and Mitsuru Itoh

    Phys. Rev. B 84, (2011) 174106.

  38. Ab-initio multiplet calculation of oxygen vacancy effect on Ti-L2,3 electron energy loss near edge structures of BaTiO3

    1. Ootsuki, H. Ikeno, Yuji Umeda, Hiroki Moriwake, Akihide Kuwabara, O. Kido, S. Ueda, Isao Tanaka, Y. Fujikawa, and Teruyasu Mizoguchi

    Appl. Phys. Lett. 99, (2011) 233109.

  39. Computer simulation of coherent BaZrO3/MgO interfaces

    Craig A. J. Fisher, Akihide Kuwabara and Hiroki Moriwake

    1. Ceram. Soc. Japan 119 (2011), 861-866
  40. Anisotropic Permittivity of Tetragonal BaTiO3:A First-Principles Study

    Hiroki Moriwake, Craig A. J. Fisher, Akihide Kuwabara, Tamotsu Hashimoto

    Jpn. J. Appl. Phys., 50 (2011) 09NE02.

  41. First-principles Calculations of the Phase Transition in CaTiO3 under Negative Static Pressure

    Hiroki Moriwake, Craig A. J. Fisher, Akihide Kuwabara, Tetsuya Tohei, Isao Tanaka

    1. Korean Phys. Soc. 59, (2011), 2497-2502.
  42. First-principles calculations of lattice dynamics in CdTiO3 and CaTiO3: Phase stability and ferroelectricity

    Hiroki Moriwake, Craig A. J. Fisher, Akihide Kuwabara, Hiroki Taniguchi, Mitsuru Itoh, and Isao Tanaka

    Phys. Rev. B 84 (2011) 104114.

  43. A High Coincidence Twin Boundary in Lithium Battery Material LiCoO2

    Craig A. J. Fisher, Rong Huang, Taro Hitosugi, Hiroki Moriwake, AkihideKuwabara, Yumi H. Ikuhara,Hideki Oki, and Yuichi Ikuhara

    NANOSCIENCE AND NANOTECHNOLOGY LETTERS in press.

  44. Oxygen-Vacancy Ordering at Surfaces of Lithium Manganese(III,IV) Oxide Spinel Nanoparticles

    Rong Huang, Yumi H. Ikuhara, Teruyasu Mizoguchi, Scott D. Findlay, Akihide Kuwabara, Craig A. J. Fisher, Hiroki Moriwake, Hideki Oki, Tsukasa Hirayama, and Yuichi Ikuhara

    Angew. Chem. Int. Ed. 50, (2011) 3053 ?3057.

  45. Real-time direct observation of Li in LiCoO2 cathode material, Rong Huang, Taro Hitosugi

    Scott D. Findlay, Craig A. J. Fisher, Yumi H. Ikuhara, Hiroki Moriwake, Hideki Oki, and Yuichi Ikuhara

    Appl. Phys. Lett. 98, (2011) 051913.

  46. Atomic Level Investigations of Lithium Ion Battery Cathode Materials

    Craig A. J. Fisher, M. Saiful Islam and Hiroki Moriwake

    1. Phys. Soc. Jpn. 79 (2010) Suppl. A, 59-64.
  47. Atomic Level Investigations of Lithium Ion Battery Cathode Materials

    Craig A. J. Fisher, M. Saiful Islam and Hiroki Moriwake

    1. Phys. Soc. Jpn. 79 (2010) Suppl. A, 59-64.
  48. First principles calculations of grain boundaries in LiCoO2

    Craig A. J. Fisher, Rong Huang, Hiroki Moriwake, Akihide Kuwabara, Yumi H. Ikuhara, Yuichi Ikuhara, Hideki Oki

    AMTC Lett. 2 (2010) 58-59.

  49. STEM observation of LiMn2O4 nanopowder made by chemical solution method

    Rong Huang, Yumi H. Ikuhara, Teruyasu Mizoguchi, Scott D. Findlay, Akihide Kuwabara, Craig A. J. Fisher, Hiroki Moriwake, Hideki Oki, Tsukasa Hirayama, Yuichi Ikuhara

    AMTC Lett. 2 (2010) 250-251.

  50. First principles calculations of charge-ordered LiNi2O4

    Akihide Kuwabara, Hiroki Moriwake, Craig A. J. Fisher, Rong Huang, Yumi H. Ikuhara, Yuichi Ikuhara, Hideki Oki

    AMTC Lett. 2 (2010) 200-201.

  51. Electrochemical potential winddows of supercapacitor electrolytes from first-principles calculations

    Hiroyuki Maeshima, Hiroki Moriwake, Craig A. J. Fisher, Akihide Kuwabara

    AMTC Lett. 2 (2010) 198-199.

  52. First-principles calculations of Li migration in LiCoO2 using the GGA+U approach

    Hiroki Moriwake, Akihide Kuwabara, Craig A. J. Fisher, Rong Huang, Yumi H. Ikuhara, Yuichi Ikuhara, Hideki Oki

    AMTC Lett. 2 (2010) 196-197.

  53. First-Principles Calculations of Electronic Structure and Solution Energies of Mn-Doped BaTiO3

    Hiroki Moriwake, Craig A. J. Fisher, Akihide Kuwabara

    Jpn. J. Appl. Phys., 49 (2010) 09MC01.

  54. Quantitative Evaluation of Electrochemical Potential Windows of Electrolytes for Electric Double-Layer Capacitors Using Ab Initio Calculations

    Hiroyuki Maeshima, Hiroki Moriwake, Akihide Kuwabara, and Craig A. J. Fisher

    J.Electrochem. Soc. 157 (2010) A696-A701.

  55. Transmission electron microscopy and scanning transmission electron microscopy study on B-site cation ordered structures in a (1?x)Pb(Mg1/3Nb2/3)O3 ? xPbTiO3 single crystal

    Yukio Sato, Teruyasu Mizoguchi, Naoya Shibata, Hiroki Moriwake, Tsukasa Hirayama, and Yuichi Ikuhara

    Appl. Phys. Lett. 95, (2009) 022906.

  56. First-Principles Calculations of Rare-Earth Dopants in BaTiO3

    Hiroki Moriwake, Craig A. J. Fisher, Akihide Kuwabara

    Jpn. J. Appl. Phys., 48 (2009),09KC03.

  57. Magnetic Properties of Ni alloys for Superconducting Wire Substrates: a First-Principles Study

    Hiroki Moriwake, Takeharu Kato, Akihide Kuwabara, Craig A. J. Fisher, Tsukasa Hirayama

    Jpn. J. Appl. Phys., 48 (2009), 083003.

  58. Lattice dynamics and thermal properties of SrHfO3 by first-principles calculations

    Hidenobu Murata, Tomoyuki Yamamoto, Hiroki Moriwake and Isao Tanaka

    Physica status solidi B 246 (2009) 1628?1633.

  59. Geometric ferroelectricity in rare-earth compounds RGaO3 and RInO3

    Tetsuya Tohei, Hiroki Moriwake, Hidenobu Murata, Akihide Kuwabara, Ryo Hashimoto, Tomoyuki Yamamoto, and Isao Tanaka

    Phys. Rev. B 79 (2009) 144125.

  60. Oxygen vacancy formation energy and its effect on spontaneous polarization in Bi4Ti3O12 : A first-principles theoretical study

    Tamotsu Hashimoto, Hiroki Moriwake

    Phys. Rev. B 78 (2008) 092106.

  61. Isostructural phase transitions of tetragonal perovskite titanates under negative hydrostatic pressure

    Hiroki Moriwake, Yukinori Koyama, Katsuyuki Matsunaga, Tsukasa Hirayama, Isao Tanaka

    1. Phys.: Condens. Matter 20 (2008) 345207.
  62. Theoretical study on BaTiO3 ceramic Nanoclusters

    Shin?fichi Higai, Atsushi Honda, Hiroki Moriwake, Keisuke Kageyama, Hiroshi Takagi, Yukio Sakabe

    AMTC Lett. 1 (2008) 182-183.

  63. Systematic study of structural instabilities in REMO3 series compounds by first principles calculations

    Tetsuya Tohei, Hiroki Moriwake, Akihide Kuwabara, Fumiyasu Oba, Isao Tanaka

    AMTC Lett. 1 (2008) 194-195.

  64. Anisotropic Behavior of Permittivity of Tetragonal-phase BaTiO3:A First-Principles Study

    Hiroki Moriwake, Tsukasa Hirayama, Tamotsu Hashimoto, Kiyoyuki Terakura

    AMTC Lett. 1 (2008) 192-193.

  65. Raman Spectroscopic Evaluation and Microwave, Dielectric Property of Order/Disorder and Stoichiometric/Non-Stoichiometric Ba(Zn1/3Ta2 /3)O3

    Eiichi Koga, Hiroki Moriwake, Ken-ichi Kakimoto, Hitoshi Ohsato

    Ferroelectrics, 356 (2007)146?152.

  66. First-Principles Calculation of Solution Energy of Alkaline-Earth Metal Elements to BaTiO3

    Hiroki Moriwake, Tsukasa Hirayama, Yuichi Ikuhara, and Isao Tanaka

    Jpn. J. Appl. Phys. 46, No. 10B, (2007) 7136-7140.

  67. Theoretical and Experimental Consideration of the Valence Band X-ray Photoelectron Spectroscopy Spectra of Cr-Deficit MgCr2-xO4

    Hiroki Moriwake, Shinta Watanabe, Kazuyoshi Ogasawara

    Jpn. J. Appl. Phys., 46, No. 7A, (2007) 4175-4178.

  68. Order-disorder transition and its effect on microwave quality factor Q in Ba(Zn1/3Nb2/3)O3 system

    Eiichi Koga, Yuji Yamagishi, Hiroki Moriwake, Ken-ich Kakimoto, Hitoshi Ohsato

    1. Electroceram., 17 (2006), 375-379.
  69. Synthesis of Disordered Ba(Zn1/3Ta2/3)O3 by Plasma Sintering and Its Microwave Q factor

    Eiichi Koga, Hiroki Moriwake, Ken-ich Kakimoto, Hitoshi Ohsato

    Jpn. J. Appl. Phys., 45 (2006), 7484-7488.

  70. Large Q factor variation within dense, highly ordered Ba(Zn1/3Ta2/3)O3 system

    Eiichi Koga, Yuji Yamagishi, Hiroki Moriwake, Ken-ich Kakimoto, Hitoshi Ohsato

    1. Euro. Ceram. Soc., 26 (2006), 1961-1964.
  71. First-principles Calculation of Formation Energy of Neutral Point Defects in Perovskite type BaTiO3

    Hiroki Moriwake

    Int. J. Quantum chem. 99 (2004) 824-827

  72. First principles calculations of the formation energy of Cr/Al-vacancies in spinel type MgCr2O4 and MgAl2O4

    Hiroki Moriwake, Isao Tanaka, Fumiyasu Oba Yukinori Koyama and Hirohiko Adachi

    Int. J. Quantum chem. 91 (2002) 208-210.

  73. Theoretical Solution Energy of Alkaline Earth Ions in Lanthanum Chromites

    Hiroki Moriwake, Isao Tanaka, Kazuyoshi Tatsumi, Yukinori Koyama and Hirohiko Adachi, Hisataka Yakabe, Isamu Yasuda

    Mater. Trans. 43 (2002) 1456-1459.

  74. Formation energy of Cr/Al vacancies in spinel MgCr2O4 and MgAl2O4 by first-principles calculations

    Hiroki Moriwake, Isao Tanaka, Fumiyasu Oba Yukinori Koyama and Hirohiko Adachi.

    Phys. Rev. B65 (2002) 153103.

  75. Ferroelectric Property and Crystal Structure of the Pb(Zr1-xTix)O3x=0.200 to 0.750, Ceramics

    Takashi Yamamoto and Hiroki Moriwake?C

    1. Korean Phys. Soc.32.(1998) 1301-1303.
  76. Particle-Size Dependence of Crystal Structure of BaTiO3 Powder

    Takashi Yamamoto, Hirotake Niori and Hiroki Moriwake?C

    Jpn. J. Appl. Phys. 39 (2000) 5683-5686.

  77. Electronic Structure and Chemical Bondings of MgCr2-xO4

    Hiroki Moriwake, Isao Tanaka, Fumiyasu Oba and Hirohiko Adachi?C

    Jpn. J. Appl. Phys. 39 (2000) .513-516.

  78. Exhaust Gas High Temperature Sensor for LEV/ULEV and OBD System

    Nobuharu Katsuki, Takashi Tamai, Hiroki Moriwake, Masahiro Saito, Joe LeGare and Sumitake Yoshida,

    JSAE paper, 690336 (1996)149-155.

Invited Talks at International Conferences

  1. First principle calculation of ferroelectric materials

    Hiroki MORIWAKE “International Symposium of Piezoelectric Materials Toward Energy Harvesting” Feb. 24, 2016 Ryukoku University Kyoto Hall, Kyoto, JAPAN.

  2. Functional electronic ceramic materials research by collaboration between atomic level structure analysis and theoretical calculations

    Hiroki MORIWAKE “2nd International Symposium on Frontiers in Materials Science (FMS2015)” Nov. 19-21, 2015 Waseda University, Tokyo, JAPAN.

  3. Functional electronic ceramics material research by collaboration between atomic level structure analysis and theoretical calculations

    Hiroki MORIWAKE “The 11th International Conference of Pacific Rim Ceramic Societies(PacRim-11)” Aug. 30th to Sept. 4th, 2015 International Convention Center Jeju, KOREA.

  4. First-Principles Study at JFCC

    Hiroki MORIWAKE “2014 MedeAR Users’ Group Meeting” October 21- 23, 2014 Sheraton Philadelphia Society Hill, USA.

  5. Ferroelectric materials and first-principles calculations in a private company and a research institute

    Hiroki MORIWAKE “Future Ferroelectrics 2014 (Summer School for Young Scientists)” August20- 22, 2014, The Saijo Seminar House of Hiroshima Univ., Japan.

  6. Collaborative Research between First-Principles Calculations and Atomistic Resolution Structure Analysis on Li-ion Battery Materials

    Hiroki MORIWAKE “The 8th International Conference on the Science and Technology for Advanced Ceramics (STAC-8)” June 16-18, 2014 Mielparque-Yokohama, Yokohama, Japan.

  7. MLCC materials research using First-Principles calculations

    Hiroki MORIWAKE “16th US-Japan Seminar on Dielectric and Piezoelectric Materials” November 3-6, 2013, Sheraton Raleigh, Raleigh, NC, USA.

  8. First-Principles Calculations of Ferroelectric Materials

    Hiroki MORIWAKE “The 9th International Meeting of Pacific Rim Ceramic Societies” (PacRim 9) July 10-14 2011, Cairns Convention Centre, Cairns, North Queensland, Australia

  9. First-principles calculations of ferroelectric phase transition of CaTiO3

    Hiroki MORIWAKE “The 27th International Korea-Japan Seminar on Ceramics” November24-36 2010, Songdo Convensia  Incheon, Korea.

  10. First-principles calculations of ferroelectric phase transition of CaTiO3

    Hiroki MORIWAKE “The 8th Japan-Korea Conference on Ferroelectrics (JKC-FE08)” August 2-6, 2010 Egret Himeji, Himeji, Japan.

  11. First-principles calculations of ferroelectric phase transitions in perovskite titanates

    Hiroki MORIWAKE, Yukinori KOYAMA, Katsuyuki MATSUNAGA, Tsukasa HIRAYAMA and Isao TANAKA “The Third International Conference on the Science and Technology for Advanced Ceramics (STAC-3) ” June 16-18, 2009 Mielparque-Yokohama, Yokohama, Japan.