The electrical conductivity of Fe4O5, Fe5O6, and Fe7O9 up to 60 GPa
The electrical conductivity of Fe4O5, Fe5O6, and Fe7O9 up to 60 GPa
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Fe4O5、Fe5O6 和 Fe7O9 的电导率高达 60 GPa
DOI:
10.1007/s00269-022-01188-4
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发表时间:
2022
影响因子:
1.4
通讯作者:
Hirao Naohisa
中科院分区:
文献类型:
--
作者:
Maitani Shuhou;Sinmyo Ryosuke;Ishii Takayuki;Kawaguchi Saori I.;Hirao Naohisa
The electrical conductivities of iron-bearing minerals are important for understanding the chemical and thermal heterogeneity of the Earth’s mantle. Recent high-pressure experiments have shown that the new iron oxide group (FeO)m(Fe2O3)nis stable under mantle conditions. Although the new iron oxides possibly play an important role in the subduction zone, the physical properties of these iron oxides are still unclear. Here, we determined the electrical conductivities of Fe4O5, Fe5O6, and Fe7O9at pressures up to 60 GPa using diamond anvil cells. The electrical conductivities of the iron oxides generally increased with increasing pressure, and the values were comparable with previous data for Fe3O4and FeO at high pressures. Although iron oxides with a mixed-valence state are generally highly conductive, Fe7O9was less conductive than Fe4O5and Fe5O6. This difference is likely due to the ordered sites and valences in the structures of Fe4O5and Fe5O6. The results show that the new iron oxides were not metallic under the experimental conditions. The iron oxides in the subducted materials may cause anomalies in the electrical conductivity of the deep mantle along with the melt and water.
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DOI:
--
发表时间:
1962
期刊:
影响因子:
--
作者:
D. S. Tannhauser
通讯作者:
D. S. Tannhauser
影响因子:
64.8
作者:
Stagno, Vincenzo;Ojwang, Dickson O.;Frost, Daniel J.
通讯作者:
Frost, Daniel J.
影响因子:
3.1
作者:
Ishii T;Uenver-Thiele L;Woodland AB;Alig E;Boffa Ballaran T
通讯作者:
Boffa Ballaran T
影响因子:
18.3
作者:
E. Kiseeva;D. Vasiukov;B. Wood;C. McCammon;T. Stachel;M. Bykov;E. Bykova;A. Chumakov;V. Cerantola;J. Harris;L. Dubrovinsky
通讯作者:
E. Kiseeva;D. Vasiukov;B. Wood;C. McCammon;T. Stachel;M. Bykov;E. Bykova;A. Chumakov;V. Cerantola;J. Harris;L. Dubrovinsky
DOI:
10.1073/pnas.2004269117
发表时间:
2020-09-01
影响因子:
11.1
作者:
Anzolini, Chiara;Marquardt, Katharina;Nestola, Fabrizio
通讯作者:
Nestola, Fabrizio