Magnetic Isotherm of Itinerant Electron Magnets – A New Approach to Itinerant Electron Metamagnetism

Magnetic Isotherm of Itinerant Electron Magnets – A New Approach to Itinerant Electron Metamagnetism
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流动电子磁体的磁等温线——流动电子超磁性的新方法

DOI:
10.1088/1742-6596/344/1/012002
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发表时间:
2012
期刊:
Journal of Physics: Conference Series
影响因子:
--
通讯作者:
Y. Takahashi
Y. Takahashi
中科院分区:
--
文献类型:
--
作者:
Y. Takahashi

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简要回顾了巡游电子铁磁体中磁等温线的理论发展,并与观测到的磁化强度测量结果进行了比较。巡回电子变磁转变起源于磁化曲线,磁化曲线由磁化自由能的负第四展开系数导出。然而,在我们看来,很难期望磁原点的负系数。因此,我们提出了一个新的机制的变磁转变,通过采取明确的考虑体积依赖的自由能,这是符合我们的自旋涨落理论的磁性等温线。
Theoretical development on the magnetic isotherm in itinerant electron ferromagnets is briefly reviewed in comparison with observed magnetization measurements. Itinerant electron metamagnetic transitions originate from the magnetization curve derived from the negative fourth expansion coefficient of the free energy in magnetization. In our view, however, it is difficult to expect the negative coefficient of the magnetic origin. We therefor propose a new mechanism of the metamagnetic transition, by taking an explicit account of volume dependence of the free energy, which is consistent with our spin fluctuation theory of magnetic isotherms.
铁磁霍斯勒合金Co2CrGa在居里温度附近的磁化过程
DOI: --
发表时间: 2010
期刊: J. Physics : Conference Series
影响因子: --
作者:
H. Nishihara;Y. Furutani;T. Wada;T. Kanomata;K. Kobayashi;R. Kainuma;K. Ishida;k. Koyama;K. Watanabe
通讯作者: K. Watanabe