Magnetic properties of Mn-rich Pd2MnSn Heusler alloys
Magnetic properties of Mn-rich Pd2MnSn Heusler alloys
复制标题
富锰Pd2MnSn Heusler合金的磁性能
DOI：
10.1016/j.jallcom.2010.05.176
复制
发表时间：
2010
影响因子：
6.2
通讯作者：
R. Kainuma
中科院分区：
文献类型：
--
作者：
T. Kanomata;K. Endo;Y. Chieda;T. Sugawara;K. Obara;T. Shishido;K. Matsubayashi;Y. Uwatoko;H. Nishihara;R. Umetsu;M. Nagasako;R. Kainuma
Pd2Mn 1 + xSn 1 −x（0≤x≤0.30）合金的晶体结构为立方L21结构。晶格参数a随着Mn浓度x的增加而线性减小。X射线粉末衍射图表明，过量的Mn原子占据了Sn空位。所有的合金都表现出铁磁性。Pd_2MnSn在5K时每分子单位磁矩的压力变化与压力无关。Pd2Mn1+xSn1−x（0≤x≤0.30）合金的居里温度随x的增加而线性增加。磁化强度测量表明，Mn原子的磁矩，取代Sn的网站，反铁磁耦合的铁磁Mn亚晶格上的Mn原子的磁矩。
Pd2Mn1+xSn1−x(0≤x≤0.30) alloys crystallize in the cubic L21structure. The lattice parameter a decreases linearly with increasing Mn concentration x. X-ray powder diffraction patterns indicate that the excess Mn atoms occupy the vacant Sn sites. All alloys exhibit the ferromagnetic behavior. The pressure change of the magnetic moment per formula unit at 5K for Pd2MnSn is independent of pressure. The Curie temperature of Pd2Mn1+xSn1−x(0≤x≤0.30) alloys increases linearly with increasing x. Magnetization measurements make clear that the magnetic moment of Mn atoms, which substitute for Sn sites, is coupled antiferromagnetically to the magnetic moment of Mn atoms on the ferromagnetic Mn sublattice.