Electrical resistance of single-crystal magnetite (Fe 3 O 4 ) under quasi-hydrostatic pressures up to 100 GPa
- Carnegie Inst. of Washington, Washington, DC (United States). Geophysical Lab.
- Univ. of North Florida, Jacksonville, FL (United States). Dept. of Physics
- Ecole Polytechnique Federale Lausanne (Switzlerland)
- Carnegie Inst. of Washington, Washington, DC (United States). Geophysical Lab.; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
We measured the pressure dependence of electrical resistance of single-crystal magnetite (Fe3O4) under quasi-hydrostatic conditions to 100 GPa using low-temperature, megabar diamond-anvil cell techniques in order to gain insight into the anomalous behavior of this material that has been reported over the years in different high-pressure experiments. The measurements under nearly hydrostatic pressure conditions allowed us to detect the clear Verwey transition and the high-pressure structural phase. Furthermore, the appearance of a metallic ground state after the suppression of the Verwey transition around 20 GPa and the concomitant enhancement of electrical resistance caused by the structural transformation to the high-pressure phase form reentrant semiconducting-metallic-semiconducting behavior, though the appearance of the metallic phase is highly sensitive to stress conditions and details of the measurement technique.
- Research Organization:
- Carnegie Inst. of Science, Washington, DC (United States); Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- NA0002006; SC-0001057; FG02-02ER45955; FG02-99ER45775; AC52-07NA27344
- OSTI ID:
- 1364599
- Alternate ID(s):
- OSTI ID: 1246184
- Journal Information:
- Journal of Applied Physics, Vol. 119, Issue 13; ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe 5 O 6
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journal | January 2020 |
A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe 5 O 6
|
journal | January 2020 |
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