Spin ordering in Fe3-x Mn x Si Heusler alloys
Spin ordering in Fe3-x Mn x Si Heusler alloys
复制标题
Fe3-x Mn x Si Heusler 合金中的自旋排序
DOI：
10.1080/13642819808206770
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
E. Supanetz
中科院分区：
文献类型：
--
作者：
P. Mohn;E. Supanetz
本文用增广球面波方法研究了Heusler合金Fe_（3-x）Mn_xSi在x为整数时形成的有序金属间化合物。在我们的计算中，我们允许非共线的自旋排序。结果表明，Fe_3Si的磁基态由铁磁体转变为Mn_3Si的长波长自旋螺旋，接近于[111]反铁磁体。我们的计算结果与实验结果非常吻合，对于Fe 2 MnSi尤其如此，我们的计算证实了实验猜想，即由于自旋偏离[111]轴，[111]反铁磁体具有铁磁成分。
Abstract Applying the augmented spherical wave method, the Heusler alloy Fe3-x Mn x Si is studied for integer values of x where it forms fairly well ordered intermetallic compounds. In our calculation we allow for non-collinear spin ordering. It is found that the magnetic ground state changes from a ferromagnet for Fe3Si to a long wavelength spin spiral for Mn3Si which is close to a [111] antiferromagnet. Our results are in excellent agreement with experiment, which is particularly true for Fe2MnSi where our calculations confirm the experimental conjecture of a [111] antiferromagnet with a ferromagnetic component due to a canting of the spins off the [111] axis.