Magnetism of CaRuO3 crystal
Magnetism of CaRuO3 crystal
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CaRuO3晶体的磁性
DOI：
10.1016/j.jallcom.2003.10.026
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发表时间：
2004
影响因子：
6.2
通讯作者：
Y. Noro
中科院分区：
文献类型：
--
作者：
A. Koriyama;M. Ishizaki;T. C. Ozawa;T. Taniguchi;Y. Nagata;H. Samata;Y. Kobayashi;Y. Noro
使用多晶和单晶样品研究了 CaRuO3 的磁性能。多晶样品的M(T)曲线表现出不可逆行为，M(H)曲线在60K以下表现出弱铁磁行为。在 1.7 至 300K 温度范围内，伪立方晶体样品的 M(T) 曲线中未观察到不可逆行为。结论是，在多晶样品中观察到的不可逆行为并不是 CaRuO3 的固有特性。晶体样品的M(H)曲线在1.7和5K处表现出特殊的行为，表明在极低的温度下存在磁序。穆斯堡尔对 CaRu0.9957Fe0.01O3 晶体的研究表明，在温度低至 15K 时不存在磁序；然而，在 2 和 5K 处观察到了六重奏，表明磁序的存在。因此，从磁化强度和穆斯堡尔测量结果可以得出结论：在低于15K的温度下不存在磁序；然而，在低于 15K 的温度下，CaRuO3 中可能会出现磁有序。
The magnetic properties of CaRuO3were studied using polycrystalline and single-crystal samples. The M(T) curves of the polycrystalline sample showed irreversible behavior, and the M(H) curve showed weak ferromagnetic behavior below 60K. No irreversible behavior was observed in the M(T) curves of a pseudo-cubic crystal sample at temperatures between 1.7 and 300K. It was concluded that the irreversible behavior observed for the polycrystalline sample is not an intrinsic property of CaRuO3. The M(H) curve of the crystal sample showed peculiar behavior at 1.7 and 5K, suggesting the existence of magnetic order at very low temperature. The Mössbauer study for the CaRu0.9957Fe0.01O3crystal revealed that no magnetic order exists at temperatures down to 15K; however, a sextet was observed at 2 and 5K, suggesting the existence of magnetic order. Therefore, it was concluded from the results of magnetization and the Mössbauer measurements that no magnetic order exists at temperatures down to 15K; however, possible magnetic order occurs in CaRuO3at a temperature below 15K.