Magnetic and Electrical Properties, and Mechanism of Exchange Bias-field of γ-phase and L10-type Antiferromagnetic Mn Alloys
Magnetic and Electrical Properties, and Mechanism of Exchange Bias-field of γ-phase and L10-type Antiferromagnetic Mn Alloys
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γ相和L10型反铁磁锰合金的磁电性能及交换偏磁场机理
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
K. Fukamichi
中科院分区：
文献类型：
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作者：
R. Umetsu;C. Mitsumata;A. Sakuma;K. Fukamichi
本文在理论和实验研究的基础上，讨论了γ相和L10型反铁磁锰合金的磁学和电学性质。我们要强调的一点是，计算的电子性质与实验的磁电阻率数据是一致的。特别是费米能级上的自旋结构和赝隙与反铁磁稳定性密切相关。我们的交换偏置场机制很好地描述了不同自旋结构条件下的偏置特性。从实用的角度讨论了自旋电子器件的磁体积和弹性性质。
In this review, on the basis of our recent theoretical and experimental studies, we discuss the magnetic and electrical properties of γ-phase and L10-type antiferromagnetic Mn alloys. The point we wish to stress is that the calculated electronic properties are consistent with the experimental magnetic and electrical resistivity data. Especially, the spin structures and the pseudo-gap at the Fermi level are closely correlated with the antiferromagnetic stability. Our mechanism of the exchange bias-field well describes the biasing properties under the conditions with various spin structures. From the practical viewpoint for spintronic devices, the magnetovolume and elastic properties are also discussed.