Magnetic instability in Mn2NiSb
Magnetic instability in Mn2NiSb
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DOI：
10.1016/j.scriptamat.2012.07.035
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发表时间：
2012-11
影响因子：
6
通讯作者：
Hongzhi Luo;F. Meng;Guodong Liu;Heyan Liu;Shijie Li;Enke Liu;Guangheng Wu
中科院分区：
文献类型：
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作者：
Hongzhi Luo;F. Meng;Guodong Liu;Heyan Liu;Shijie Li;Enke Liu;Guangheng Wu
Mn2NiSb可以同时存在于铁磁态和反铁磁态，因为两种状态之间的总能量差很小。在其电子结构中，存在两种不同类型的能隙，并接近费米能级。费米能级与间隙的相对位置决定了铁磁或反铁磁状态。这就是Mn2NiSb磁不稳定性的根源。预测铁磁和反铁磁Mn2NiSb的总力矩减少70%。
Mn2NiSb can exist in both ferromagnetic and antiferromagnetic states because there is only a small total energy difference between the two states. In its electronic structure, two different types of energy gaps exist and are close to the Fermi level. The relative position of the Fermi level to the gap determines the ferromagnetic or antiferromagnetic state. That is the origin of the magnetic instability in Mn2NiSb. A 70% decrease of the total moment is predicted between the ferromagnetic and antiferromagnetic Mn2NiSb.