Lattice contraction and magnetic and electronic transport properties of Mn3Zn1−xGexN
Lattice contraction and magnetic and electronic transport properties of Mn3Zn1−xGexN
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DOI：
10.1063/1.2822813
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发表时间：
2007-12
影响因子：
4
通讯作者：
Ying Sun;Cong Wang;Yongchun Wen;K. Zhu;Jingtai Zhao
中科院分区：
文献类型：
--
作者：
Ying Sun;Cong Wang;Yongchun Wen;K. Zhu;Jingtai Zhao
研究了反钙钛矿结构的Mn3Zn1−xGexN化合物的晶格和电磁输运性质。对于Mn3ZnN，在185K附近存在从反铁磁到顺磁的磁相变。相应地，电阻率出现突变，但没有发现晶格参数的突变。然而，有趣的是，Ge的部分替代引起了磁相变温度附近的晶格收缩，在该温度附近，电阻率保持下降，并且随着Ge掺杂含量的增加，相变温度点升高，温度范围变宽。并对其热力学性质进行了研究。
The lattice and electronic and magnetic transport properties of the antiperovskite structure Mn3Zn1−xGexN compounds were investigated. For Mn3ZnN, there is a magnetic transition from antiferromagnetic to paramagnetic near 185K. Correspondingly, the resistivity shows an abrupt drop, but any sudden change of lattice parameters is not found. However, it is interesting that the partial substitution of Ge for Zn induces a lattice contraction near the magnetic transition temperature, where a drop of the resistivity remain, and the transition temperature point increases and the temperature range is broadened with increasing doped Ge contents. The thermodynamics properties were also investigated.