Neutron diffraction studies of the ferrimagnetic-antiferromagnetic phase transition in cobalt modified Mn2Sb
Neutron diffraction studies of the ferrimagnetic-antiferromagnetic phase transition in cobalt modified Mn2Sb
复制标题
DOI：
10.1016/0304-8853(92)90425-n
复制
发表时间：
1992-02
影响因子：
2.7
通讯作者：
M. Ohashi;Y. Yamaguchi;T. Kanomata
中科院分区：
文献类型：
--
作者：
M. Ohashi;Y. Yamaguchi;T. Kanomata
对转变温度 Ts=170 K 和 TN=400 K 的 Mn1.8Co0.2Sb 粉末样品进行了中子衍射。Co 原子随机占据 Mn(I) 位点。在Ts=170 K时，Mn2Sb型亚铁磁结构转变为Mn2As型反铁磁有序，其中Mn(II)位点最近邻之间的矩耦合符号反转，并且反铁磁状态下的Mn(II)矩估计大于亚铁磁状态下的矩。
Neutron diffraction has been performed on a powder sample of Mn1.8Co0.2Sb which has the transition temperaturesTs=170 K andTN=400 K. Co atoms randomly occupy the Mn(I) sites. The Mn2Sb-type ferrimagnetic structure is transformed into the Mn2As-type antiferromagnetic ordering atTs=170 K, where the sign of the moment coupling between the nearest neighbors of the Mn(II) site is reversed and the moment of Mn(II) in the antiferromagnetic state is estimated to be larger than that in the ferrimagnetic state.