| Autor: |
Kawakami, Takateru, Nakakura, Yuta, Tokumichi, Keita, Ohishi, Yasuo, Hirao, Naohisa, Yamada, Ikuya |
| Zdroj: |
Journal of the Physical Society of Japan; 5/15/2022, Vol. 91 Issue 5, p1-6, 6p |
| Abstrakt: |
The electronic properties of the A-site-ordered perovskite iron oxide LuCu3Fe4O12 subjected to pressure in a diamond anvil cell were investigated by 57Fe Mössbauer spectroscopy, electrical resistance, and X-ray diffraction measurements. The application of pressure induced the transition from the charge disproportionation (Fe3+ and Fe5+) state to the charge-uniform (Fe3.75+) state and from semiconductor to metal. Upon further pressurization, Fe3.75+ underwent a spin transition, which was accompanied by a significant reduction in unit-cell volume. Thus, under high pressure, the metallic charge-uniform low-spin state of LuCu3Fe4O12 is stable. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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