Spin transition of ferric iron in the lower mantle

2011 Fiscal Year Final Research Report

• Project/Area Number: 21540491
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Petrology/Mineralogy/Science of ore deposit
• Research Institution: Ehime University (2010-2011); Hokkaido University (2009)
• Principal Investigator: FUJINO Kiyoshi 愛媛大学, 地球深部ダイナミクス研究センター, グローバルCOE教授 (40116968)
• Co-Investigator(Kenkyū-buntansha): NAGAI Takaya 北海道大学, 大学院・理学研究院, 准教授 (20243131)
• Project Period (FY): 2009 – 2011
• Keywords: スピン転移 / 3価鉄 / ペロブスカイト / ポストペロブスカイト / 下部マントル / X線発光分光法 / X線回折

Research Abstract

Spin transitions of ferric iron in Mg-perovskite(Pv) and post-Mg-perovskite(PPv) were examined up to 200 GPa and 165 GPa, respectively, by X-ray emission spectroscopy and X-ray diffraction. The results showed that high spin ferric iron in Pv moves from the A-site to the B-site above 50-60 GPa and becomes low spin, while ferric iron in PPv occupies the B-site and is low spin in its whole stability region.

Research Products

• [Journal Article] Spin transition of ferric iron in Al-bearing Mg-perovskite up to 200 GPa and its implication for the lower mantle (2012)
  • Author(s): Fujino, K., Nishio-Hamane, D., Seto, Y., Sata, N., Nagai, T., Shinmei, T., Irifune, T., Ishii, H., Hiraoka, N., Cai, Y. Q., and Tsuei K.-D.
  • Journal Title: Earth Planet. Sci. Lett. Pages: 317-318, 407-412
  • DOI: doi:10.1016/j.epsl.2011.12.006.
• [Journal Article] MgSiO_3-FeAlO_3系ペロブスカイトの固溶メカニズムと結晶化学 (2011)
  • Author(s): 永井隆哉, 濱根大輔, 藤野清志
  • Journal Title: 日本結晶学会誌 Volume: 53 Pages: 8-12
• [Journal Article] Pressure-induced spin transition in FeCO_3-siderite studied by X-ray diffraction measurements (2010)
  • Author(s): Nagai, T., Ishido T., Seto, Y., Hamane, D., Sata, N., and Fujino, K.
  • Journal Title: Journal of Physics : Conference Series Volume: 215 Pages: 012002
  • DOI: doi:10.1088/1742-6596/215/1/012002.
• [Presentation] Spin transitions of iron in the lower mantle minerals-new approaches to settle the spin transition problems of iron- (2012)
  • Author(s): Fujino, K., Hamane, D., Nagai, T., Seto, Y., Kuwayama, Y., Ohfuji, H., Shinmei, T., Irifune, T.
  • Organizer: 日本地球惑星科学連合2012大会
  • Place of Presentation: 幕張,千葉
  • Year and Date: 2012-05-21
• [Presentation] Spin states of ferric iron in Al-bearing Mg-perovskite and post-Mg-perovskite in the lower mantle (2011)
  • Author(s): Fujino, K., Hamane, D., Seto, Y., Nagai, T., Shinmei, T., Whitaker, M. L., Kuwayama, Y., Ohfuji, H., Irifune, T., Hiraoka, N., Ishii, H.
  • Organizer: AGU Fall Meeting 2011
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2011-12-07
• [Presentation] 下部マントル構成相における鉄のスピン転移 (2011)
  • Author(s): 藤野清志, 浜根大輔, 瀬戸雄介, 永井隆哉, 新名亨, 桑山靖弘, 大藤弘明, 入舩徹男
  • Organizer: 第52回高圧討論会
  • Place of Presentation: 沖縄キリスト教学院,那覇
  • Year and Date: 2011-11-11
• [Presentation] 下部マントルにおける鉄のスピン転移と構成相間の鉄の分配および相転移圧への影響 (2011)
  • Author(s): 藤野清志, 浜根大輔, 永井隆哉, 瀬戸雄介, 桑山靖弘, 大藤弘明, 新名亨, 入舩徹男
  • Organizer: 日本地質学会第118年学術大会・日本鉱物科学会2011年年会合同学術大会
  • Place of Presentation: 水戸
  • Year and Date: 2011-09-11
• [Presentation] Spin transition of ferric iron in Mg-perovskite up to 200 GPa and its implication to the lower mantle IMA2010 (2010)
  • Author(s): Fujino, K., Hamane, D., Seto, Y., Sata, N., Nagai, T., Shinmei, T., Irifune, T., Ishii, H., Hiraoka, N., Cai, Y. Q., and Tsuei, K. D.
  • Place of Presentation: Budapest, Hungary
  • Year and Date: 2010-08-26
• [Presentation] Spin state of ferric iron in Mg-perovskite up to 200 GPa by X-ray emission spectroscopy and its implication to the lower mantle (2009)
  • Author(s): Fujino, K., Nishio-Hamane, D., Seto, Y., Sata, N., Nagai, T., Ishido, T., Li, L., Shinmei, T., Irifune, T., Ishii, H., Hiraoka, N., Cai, Y., Tsuei, K.
  • Organizer: American Geophysical Union Fall Meeting 2009
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2009-12-15
• [Book] 地球惑星科学入門 (2010)
  • Author(s): 藤野清志, 蓬田清
  • Total Pages: 15-24
  • Publisher: 北海道大学出版会