Temperature Dependence of the Exchange Anisotropy of a GdFeCo Ferrimagnetic Film Coupled to the IrMn Antiferromagnet

被引：3

作者：

Koplak, O., V ^{[1
,2
]}

Gornakov, V. S. ^{[3
]}

Kabanov, Yu P. ^{[3
]}

Kunitsyna, E., I ^{[1
,2
]}

Shashkov, I., V ^{[3
]}

机构：

[1] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Moscow Region, Russia

[2] Tambov State Tech Univ, Tambov 39200, Russia

[3] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow Region, Russia

来源：

JETP LETTERS | 2019年 / 109卷 / 11期

关键词：

MAGNETIZATION REVERSAL; MODEL;

D O I：

10.1134/S0021364019110092

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The uniaxial anisotropy and kinetics of the transformation of the domain structure in a ferrimagnetic GdFeCo film exchange-coupled to the IrMn antiferromagnet have been studied in a wide temperature range. Ta/Pt/GdFeCo/IrMn/Pt multilayer structures with perpendicular magnetic anisotropy demonstrate the compensation of the sublattice magnetization at K and K. Nonmonotonic temperature dependences of the exchange bias field H-EX and coercivity H-C are revealed. It is established that the slope of the dependence and the quantity H-EX change sign at T-1. An orientational phase transition is detected at a temperature of T-CR = 35 K, below which uniaxial anisotropy, as well as the mechanism of coercive force formation, changes.

引用

页码：722 / 728

页数：7

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