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Synchrotron Mössbauer spectroscopic and x-ray diffraction study of ferropericlase in the high-pressure range of the lower mantle region
https://repo.qst.go.jp/records/82820
https://repo.qst.go.jp/records/8282055ae0b7a-d914-434d-bee2-042d066f6a17
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-03-05 | |||||
| タイトル | ||||||
| タイトル | Synchrotron Mössbauer spectroscopic and x-ray diffraction study of ferropericlase in the high-pressure range of the lower mantle region | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Maki, Hamada
× Maki, Hamada× Seiji, Kamada× Eiji, Ohtani× Tatsuya, Sakamaki× Takaya, Mitsui× Ryo, Masuda× Naohisa, Hirao× Yasuo, Ohishi× Masahide, Akasaka× Takaya, Mitsui |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Systematic change of structural transition and high-spin (HS) to low-spin (LS) transition of Fe2+ in synthetic (Mg0.6Fe0.4 )O ferropericlase for pressures up to that of the lower mantle region were investigated using synchrotron XRD and synchrotron Mössbauer spectroscopic methods. The XRD patterns and the Mössbauer spectra were measured up to 160 GPa at room temperature. The results of the synchrotron XRD analysis indicate that the cubic structure of (Mg0.6Fe0.4)O ferropericlase is maintained up to 160 GPa. The Mössbauer spectra at 19.8 and 24.0 GPa consist of three doublets assigned to HS Fe2+ at the octahedral site. At pressures from 61 to 136 GPa, a singlet assigned to LS Fe2+ is added to the three HS Fe2+ doublets, and its area ratio with respect to the HS Fe2+ doublets gradually increase with increasing pressure. At pressures above 136 GPa, the Mössbauer spectra consist of only an LS Fe2+ singlet, implying that all Fe at these pressures is in a LS state. The resulting spin crossover pressure interval from 61 to 136 GPa indicates the coexistence of both HS and LS Fe2+ at pressure conditions from the upper part to the bottom of the lower mantle. | |||||
| 書誌情報 |
Physical Review B 巻 103, 号 17, p. 174108, 発行日 2021-05 |
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| 出版者 | ||||||
| 出版者 | APS | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2469-9950 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1103/PhysRevB.103.174108 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.103.174108 | |||||
