High field transitions in (FeMn)3Si alloys
High field transitions in (FeMn)3Si alloys
复制标题
(FeMn)3Si 合金中的高场转变
DOI：
10.1063/1.353586
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发表时间：
1993
影响因子：
3.2
通讯作者：
S. Yoon
中科院分区：
文献类型：
--
作者：
H. J. Al;J. Booth;S. Yoon
具有D03结构的Fe3−xMnxSi系列固溶体的磁性有序性在低场和宽温度范围内得到了广泛的研究。本研究报道了在重排序温度TR以下的低温范围内，在浓度范围1.6≤x≤1.8的系列成员中，观察到高场诱导的跃迁。这些合金在低于TR的低磁场中表现为反铁磁性，但在高达12t的磁场范围内应用，结果转变为明显的铁磁性状态。该转变发生在低于TR的所有温度下，并且可逆发生，除了在最低温度下，迟滞可能为~ 0.5 t。临界场随温度的变化遵循近似二次型。Arrott图表明，对于x=1.70的合金，在65≤T≤85 K范围内存在狭窄的铁磁区，在此范围内材料是顺磁性的。然而，对于x=1.75的合金，Arrott图表明……
The magnetic ordering in the series of solid solutions Fe3−xMnxSi having the D03 structure has been extensively studied at low fields over a wide range of temperatures. The present study reports observations of high‐field‐induced transitions in the low temperature range below the reordering temperature TR for members of the series falling within the concentration range 1.6≤x≤1.8. These alloys appear antiferromagnetic in low fields below TR but application of a field within the range up to 12 T results in a transition to an apparently ferromagnetic state. The transition occurs at all temperatures below TR and occurs reversibly except at the lowest temperatures where the hysteresis may be ∼0.5 T. The variation of the critical field with temperature follows an approximately quadratic form. Above TR Arrott plots suggest for the alloy with x=1.70 that a narrow ferromagnetic regime exists over the range 65≤T≤85 K above which the material is paramagnetic. For the alloy with x=1.75 however the Arrott plots sugges...