Abstract

The field dependences of the magnetization of nitrogen-containing compounds R(Fe,Ti)\({}_{12}\)N (R = Ho and Er) are analyzed. It was found that the initial HoFe\({}_{11}\)Ti sample at \(T=4.2\) K exhibits the eaxy-axis anisotropy; however, as a result of nitriding, the anisotropy type changes to the easy cone of magnetization. As in the original samples of HoFe\({}_{11}\)Ti and ErFe\({}_{11}\)Ti, in HoFe\({}_{11}\)TiN and ErFe\({}_{11}\)TiN nitrides the cascade of spin-reorientation phase transitions is observed which is induced by external magnetic field. In the framework of the molecular field theory, the effect of nitriding on the interlattice exchange interactions is estimated. It is established that the molecular field that acts from the iron sublattice on rare-earth ions (holmium and erbium) is enhanced. The effect of nitriding and hydrogenation on the intersublattice exchange is compared.

中文翻译：

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加强R（Fe，Ti）$$ {} _ {12} $$ N（R = Ho和Er）氮化物中的亚晶间交换相互作用

摘要

分析了含氮化合物R（Fe，Ti）\（{} _ {12} \） N（R = Ho和Er）的磁化强度的场相关性。发现在（T = 4.2 \） K处的初始HoFe \（{} _ {11} \） Ti样品表现出重心轴各向异性。但是，由于氮化，各向异性类型变为易磁化锥。与HoFe \ {{} _ {11} \} Ti和ErFe \ {{} _ {11} \} Ti的原始样本相同，在HoFe \ {{} _ {11} \} TiN和ErFe \ {{ } _ {11} \）观察到TiN氮化物是由外部磁场引起的自旋取向相变的级联。在分子场理论的框架内，估计了氮化对晶格交换相互作用的影响。已经确定，增强了从铁亚晶格作用于稀土离子（hol和）的分子场。比较了氮化和氢化对亚晶间交换的影响。