Magnetic properties of CaRu1−xFexO3
Magnetic properties of CaRu1−xFexO3
复制标题
CaRu1−xFexO3 的磁性
DOI：
10.1063/1.2165589
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发表时间：
2006
影响因子：
3.2
通讯作者：
Y. Noro
中科院分区：
文献类型：
--
作者：
S. Mizusaki;T. Taniguchi;N. Okada;Y. Nagata;N. Hiraoka;T. Nagao;M. Itou;Y. Sakurai;T. C. Ozawa;Y. Noro
通过磁康普顿散射、穆斯堡尔效应和使用多晶样品的磁化测量，研究了CaRu 1 − xFexO 3系统中铁磁性的发生。铁磁性诱导非常小的Fe掺杂（x ≤ 0.02）顺磁性CaRuO 3，和TC增加，随着Fe含量的增加。反磁化率随温度的变化具有亚铁磁性。在TC以下的穆斯堡尔效应测量中观察到Fe ~（3+）离子同分异构位移的六重态和约450 kOe的超精细场，表明磁序的存在。磁康普顿散射实验揭示了Ru上的大磁矩以及Fe和Ru自旋磁矩之间的反铁磁耦合。提出了亚铁磁性发生的一个可能模型。
The occurrence of ferromagnetism was studied in the CaRu1−xFexO3 system by means of magnetic Compton scattering, Mossbauer effect, and magnetization measurements using polycrystalline specimens. Ferromagnetism is induced for extremely small Fe doping (x⩾0.02) to paramagnetic CaRuO3, and the TC increases as the Fe content increases. The temperature dependence of reciprocal magnetic susceptibility shows a characteristic of ferrimagnetism. A sextet with an isomer shift of the Fe3+ ion and the hyperfine field of about 450kOe were observed in the Mossbauer effect measurement below TC, suggesting the existence of magnetic order. The magnetic Compton scattering experiment revealed the occurrence of a large magnetic moment on Ru and an antiferromagnetic coupling between Fe and Ru spin moments. A possible model for the occurrence of ferrimagnetism has been proposed.