Abstract

Systematic data on the structural state and magnetic properties of films belonging to the binary Dy_{100 – x}Co_x system have been measured within broad ranges of compositions (0 ≤ x < 85), temperatures (5‒300 K), and magnetic fields (0–70 kOe). It was found that in the absence of magnetic moment on Co atoms (x ≤ 50), the films are in an asperomagnetic state, in which a considerable and nonmonotonical concentration change in the principal magnetic characteristics is observed. In the region of x > 50, the films have a sperimagnetic structure. It has been shown that the quantitative description of spontaneous magnetization in such a state can be obtained in the molecular field model.

中文翻译：

---

Dy-Co 薄膜磁性的实验研究和建模

摘要

属于二元 Dy _{100 – x} Co _x系统的薄膜结构状态和磁性能的系统数据已在广泛的成分 (0 ≤ x < 85)、温度 (5-300 K) 和磁场 ( 0–70 kOe）。发现在 Co 原子上没有磁矩 ( x ≤ 50) 时，薄膜处于非磁态，其中观察到主要磁特性的相当大的非单调浓度变化。在x > 50的区域中，薄膜具有超磁结构。已经表明，在分子场模型中可以得到这种状态下自发磁化强度的定量描述。