Texture and strain analyses of polycrystalline materials using two-dimensional X-ray diffraction patterns under high-pressure experiments

• Project/Area Number: 25287143
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Petrology/Mineralogy/Economic geology
• Research Institution: Kobe University
• Principal Investigator: SETO YUSUKE 神戸大学, 理学(系)研究科(研究院), 講師 (10399818)
• Co-Investigator(Renkei-kenkyūsha): MIYAKE AKIRA 京都大学, 大学院理学研究科, 准教授 (10324609) ; HAMANE DAISUKE 東京大学, 物性研究所, 技術職員 (20579073)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000); Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2014: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2013: ¥12,610,000 (Direct Cost: ¥9,700,000、Indirect Cost: ¥2,910,000)
• Keywords: 格子選択配向 / X線回折 / 高温高圧実験 / 地球深部物質 / 角度分散回折 / 下部マントル / レオロジー

Outline of Final Research Achievements

Angle dispersive X-ray diffraction experiments using area detectors provide wide opportunity for the determination of lattice preferred crystallite orientation (LPO) and lattice strain under stress condition in polycrystalline materials. LPO is reflected in circumferential oscillations along Debye rings, while the effect of lattice strain appears in elliptic distortions of the each ring and a deviation of the original crystallographic geometry among rings. These are substantial factors of bulk physical properties in polycrystalline materials, including seismic velocity, thermal/electric conductivity and so on. In the present study, software code was developed, in which a two-dimensional diffraction pattern is simulated based on given experimental parameters and (poly)crystalline properties. The method in the present study is potentially an applicable technique to analyze LPO and stress field of polycrystalline material under extreme conditions including deforming experiments.

Research Products

• [Journal Article] Constraints on Earth's inner core composition inferred from measurements of the sound velocity of hcp-iron in extreme conditions (2016)
  • Author(s): T. Sakamaki, E. Ohtani, H. Fukui, S. Kamada, S. Takahashi, T. Sakairi, A. Takahata, T. Sakai, S. Tsutsui, D. Ishikawa, R. Shiraishi, Y. Seto, T. Tsuchiya, and A. Q. R. Baron
  • Journal Title: Science Advances Volume: 2 Issue: 2 Pages: 2-2
  • DOI: 10.1126/sciadv.1500802
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] In situ observation of crystallographic preferred orientation of deforming olivine at high pressure and high temperature (2015)
  • Author(s): Ohuchi, T., Nishihara, Y., Seto, Y., Kawazoe, T., Nishi, M., Maruyama, G., Hashimoto, M., Higo, Y., Funakoshi, K.-I., Suzuki, A., Kikegawa, T., Irifune, T.
  • Journal Title: Physics of the Earth and Planetary Interiors Volume: 243 Pages: 1-21
  • DOI: 10.1016/j.pepi.2015.04.004
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Elastic anisotropy of experimental analogues of perovskite and post-perovskite help to interpret D” diversity (2014)
  • Author(s): Yoneda, A., Fukui, H., Xu, F., Nakatsuka, A., Yoshiasa, A., Seto, Y., Ono, K., Tsutsui, S., Uchiyama, H., Baron, A.Q.R.
  • Journal Title: Nature commun Volume: 5 Issue: 1 Pages: 3453-3453
  • DOI: 10.1038/ncomms4453
  • Peer Reviewed / Open Access
• [Journal Article] Dehydration breakdown of antigorite and the formation of B-type olivine CPO (2014)
  • Author(s): Takayoshi Nagaya, Simon R. Wallis, Hiroaki Kobayashi, Katsuyoshi Michibayashi, Tomoyuki Mizukami, Yusuke Seto, Akira Miyake, Megumi Matsumoto
  • Journal Title: Earth and Planetary Science Letters Volume: 387 Pages: 67-76
  • DOI: 10.1016/j.epsl.2013.11.025
  • Peer Reviewed
• [Journal Article] Sound velocity of hexagonal close-packed iron up to core pressures (2013)
  • Author(s): Ohtani, E., Y. Shibazaki, T. Sakai, K. Mibe, H. Fukui, S. Kamada, T. Sakamaki, Y. Seto, S. Tsutsui, and A. Q. R. Baron
  • Journal Title: Geophysical Research Letters Volume: 40 Issue: 19 Pages: 1-6
  • DOI: 10.1002/grl.50992
  • Peer Reviewed
• [Presentation] 平面検出器を用いた X 線回折スポット解析法の開発 -粒成長・相転移ダイナミクスの解明を目指して- (2015)
  • Author(s): 瀬戸 雄介・佐藤 友子・平尾 直久
  • Organizer: 第56回高圧討論会
  • Place of Presentation: 広島県広島市 JMSアステールプラザ
  • Year and Date: 2015-11-10
• [Presentation] 複雑な電子線回折パターンに対する半自動的指数付け方法の開発 (2015)
  • Author(s): 瀬戸 雄介
  • Organizer: 日本顕微鏡学会第71回記念学術講演会
  • Place of Presentation: 京都府京都市 国立京都国際会館
  • Year and Date: 2015-05-14
• [Presentation] 二次元回折の全パターン解析 -多結晶体の物性解明を目指して- (2014)
  • Author(s): 瀬戸 雄介
  • Organizer: 第55回高圧討論会
  • Place of Presentation: 徳島県 徳島大学
  • Year and Date: 2014-11-22 – 2014-11-24
• [Presentation] 二次元回折全パターンフィッティングによる多相同時解析手法の開発 (2013)
  • Author(s): 瀬戸 雄介, 西原 遊, 辻野 典秀
  • Organizer: 第54回高圧討論会
  • Place of Presentation: 新潟県 朱鷺メッセ 新潟コンベンションセンター
• [Presentation] 変形実験による(Mg,Fe)SiO3-ペロブスカイトの結晶選択配向 (2013)
  • Author(s): 辻野 典秀, 西原 遊, 山崎 大輔, 瀬戸 雄介, 高橋 栄一
  • Organizer: 第54回高圧討論会
  • Place of Presentation: 新潟県 朱鷺メッセ 新潟コンベンションセンター
• [Presentation] hcpFeの剪断誘起格子選択配向 (2013)
  • Author(s): 西原 遊, 大内 智博, 川添 貴章, 丸山 玄太, 肥後 祐司, 舟越 賢一, 瀬戸 雄介, 入舩 徹男
  • Organizer: 第54回高圧討論会
  • Place of Presentation: 新潟県 朱鷺メッセ 新潟コンベンションセンター
• [Presentation] X線非弾性散乱法によるPbnm－CaIrO3、 Cmcm-CaIrO3、アンチゴライトの結晶弾性定数決定 (2013)
  • Author(s): 米田 明, 福井 宏之, 瀬戸 雄介, 筒井 智嗣, 内山 裕士, バロン アルフレッド, 中塚晃彦, 吉朝 朗, 渡辺 了, 小野 謙弥
  • Organizer: 日本地球惑星科学連合2013年大会
  • Place of Presentation: 幕張メッセ 国際会議場
• [Presentation] DAC実験における選択配向性および格子ひずみの解析手法の開発 (2013)
  • Author(s): 瀬戸 雄介
  • Organizer: 日本地球惑星科学連合2013年大会
  • Place of Presentation: 幕張メッセ 国際会議場
• [Remarks] Seto's Home Page
  • URL: http://pmsl.planet.sci.kobe-u.ac.jp/~seto
• [Remarks] Seto's home page
  • URL: http://pmsl.planet.sci.kobe-u.ac.jp/~seto/
• [Remarks] Seto's Home Page
  • URL: http://pmsl.planet.sci.kobe-u.ac.jp/~seto/