Effect of the main-group elements on the electronic structures and magnetic properties of Heusler alloys Mn2NiZ (Z=In, Sn, Sb)
Effect of the main-group elements on the electronic structures and magnetic properties of Heusler alloys Mn2NiZ (Z=In, Sn, Sb)
复制标题
DOI：
10.1016/j.jmmm.2009.08.002
复制
发表时间：
2009-12
影响因子：
2.7
通讯作者：
Hongzhi Luo;Guodong Liu;Zhong-Ying Feng;Yangxiang Li;Li Ma;Guangheng Wu;Xiaoxi Zhu;Chengbao Jiang-Chengb
中科院分区：
文献类型：
--
作者：
Hongzhi Luo;Guodong Liu;Zhong-Ying Feng;Yangxiang Li;Li Ma;Guangheng Wu;Xiaoxi Zhu;Chengbao Jiang-Chengb
研究了Mn_2Ni_Z（Z=In，Sn，Sb）的磁性和电子结构。这些合金的磁结构主要由主族元素Z决定，而不是Mn原子之间的距离。电子结构计算表明Mn2NiIn和Mn2NiSn都是亚铁磁体，Mn磁矩之间具有反平行排列。但这种反铁磁耦合会随着Z原子价电子数的增加而减弱。当涉及Mn2NiSb时，观察到锰原子之间的铁磁耦合。成功地合成了Mn_2NiSn和Mn_2NiSb。他们的Msat 5K与理论值吻合得很好。
The magnetic properties and electronic structure of Mn2NiZ (Z=In, Sn, Sb) have been studied. The magnetic structure of these alloys is mainly determined by the main-group element Z instead of the distance between the Mn atoms. Electronic structure calculations suggest that Mn2NiIn and Mn2NiSn are both ferrimagnets with antiparallel alignment between the Mn moments. But this antiferromagnetic coupling is weakened by the increasing number of valence electrons of the Z atoms. When it comes to Mn2NiSb, a ferromagnetic coupling between the Mn atoms is observed. Mn2NiSn and Mn2NiSb have been synthesized successfully. Their Msat 5K agree well with the theoretical value.