论文标题
大声转换方法的MNF $ _2 $中磁弹性相互作用的研究
Study of magnetoelastic interaction in MnF$_2$ by the acoustoelectric transformation method
论文作者
论文摘要
MNF $ _2 $中磁弹性相互作用的机制是使用声音转换方法研究的。在抗铁磁相中确定了压电磁耦合系数及其各向异性的温度依赖性。我们观察到一种新的效果，该效果由磁敏感性张量的非对角线成分的外观组成，该效果与剪切波的作用下与阶参数的平方成正比。提出了对晶体晶格的小角度旋转的现象学解释。在顺磁性状态下，声学变形的影响降低为易感性张量的对角线成分的调节。
The mechanisms of magnetoelastic interaction in MnF$_2$ are studied using the method of acoustoelectric transformation. The temperature dependence of the piezomagnetic coupling coefficient and its anisotropy are determined in the antiferromagnetic phase. We observe a new effect consisting in the appearance of a non-diagonal component of the magnetic susceptibility tensor, which is proportional to the square of the order parameter, under the action of the shear wave. A phenomenological interpretation of the effect, which takes into account a small-angle rotation of the crystal lattice, is presented. In the paramagnetic state, the effect of acoustic deformation is reduced to the modulation of the diagonal component of the susceptibility tensor.
