AC susceptibility and DC magnetization of Fe65(Ni1-xMnx spin glasses
AC susceptibility and DC magnetization of Fe65(Ni1-xMnx spin glasses
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Fe65(Ni1-xMnx 自旋玻璃)的交流磁化率和直流磁化强度
DOI：
10.1016/0304-8853(85)90009-5
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发表时间：
1985
影响因子：
2.7
通讯作者：
Yoji Nakamura
中科院分区：
文献类型：
--
作者：
M. Shiga;Tetsuro Satake;Y. Wada;Yoji Nakamura
测量了含0.05⩽x⩽0.4的Fe65(Ni1-xMnx)35合金的交流磁化率和直流磁化强度。通过交流磁化率测量确定了磁相图，发现了x⩽0.2中的重入自旋玻璃区。在磁团簇模型的基础上，讨论了位于三临界点的x=0.25合金在有限外场下的热磁化曲线特征。用团簇模型讨论了重入自旋玻璃区的磁态，指出磁团簇的动力学特征对于理解这一区域的磁性是很重要的。
AC susceptibility and dc magnetization have been measured for Fe65(Ni1-xMnx)35alloys with 0.05 ⩽x⩽ 0.4. The magnetic phase diagram has been determined by ac susceptibility measurements and a reentrant spin glass region was found forx⩽ 0.2. The characteristic features of the thermo-magnetization curves under finite external fields for the alloy withx= 0.25, which locates at the tricritical point, are discussed on the basis of a magnetic cluster model. The magnetic state of the reentrant spin glass region is also discussed by the cluster model and it is pointed out that dynamical characters of magnetic clusters are important in understanding the magnetic properties of this region.