期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 131, 期 7, 页码 2722-2726出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja8091906
关键词
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资金
- World Premier International Research Center (WPI)
- MEXT, Japan
- JSPS, Japan [18655080, 20360012]
- Murata Science Foundation, Kyoto, Japan
- Futaba Memorial Foundation, Mobara, Japan
- Grants-in-Aid for Scientific Research [18655080] Funding Source: KAKEN
A high-quality polycrystalline sample of the correlated 4d post-perovskite CaRhO3 (Rh4+: 4d(5), S-el = 1/2) was attained under a moderate pressure of 6 GPa. Since the post-perovskite is quenchable at ambient pressure/temperature, it can be a valuable analogue of the post-perovskite MgSiO3 (stable higher than 120 GPa and unstable at ambient pressure), which is a significant key material in earth science. The sample was subjected for measurements of charge-transport and magnetic properties. The data clearly indicate it goes into an antiferromagnetically ordered state below similar to 90 K in an unusual way, in striking contrast to what was observed for the perovskite phase. The post-perovskite CaRhO3 offers future opportunities for correlated electrons science as well as earth science.
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