单晶Dy中沿基平面磁化强度的唯象计算

Phenomenological Calculation of the Magnetization with H Lying in the Basal Plane in Dysprosium Single Crystals

稀土Ｄｙ在Ｈｅｌｉｘ相其磁矩的层间转角对于品格是无公度的。但是将晶格参数随温度的变化与ＲＫＫＹ相互作用随距离的振荡行为结合在一起的考虑表明，层间转角相对于晶格参数是锁定的．在此基础上，计算了Ｄｙ的Ｍ（Ｔ，Ｈ）行为，结果与实验相符．所发展的方法可进一步用于计算Ｄｙ，Ｔｂ，以及Ｄｙ－Ｙ合金的磁热效应。

in the belical structure of Dysprosium the angles of moment rotation of successive hasal planes are incommensurate with the lattice.However,a analysis which combines the temperature dependence of lattice with the oscillatory nature of RKKY interaction shows that the angles are locked by the lattice parameters.According to this analysis we have calculated the magnetization of Dysprosium.The results are in agreement with those from the experiments.The developed method can be used for calculating magnetocaloric effects of Dy,Tb and Dy-Y alloy.