Influence of the Effects of Competition of Various Types of Anisotropy on the Critical Behavior of Magnetic Multilayer Structures

IF 1 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

Journal of Experimental and Theoretical Physics Pub Date : 2024-01-12 DOI:10.1134/S1063776123110158

A. V. Min’kova, V. V. Prudnikov, P. V. Prudnikov

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Abstract

The influence of the competition of single-ion anisotropy and easy-plane anisotropy on the magnetic properties of the multilayer structure Co/Cu/Co is investigated. The peculiarities of the influence of anisotropy effects are revealed both in the vicinity of critical temperature T_c and in the low-temperature range T \( \ll \) T_c. The magnetic properties of the multilayer structure are numerically simulated using the anisotropic Heisenberg model. In the vicinity of T_c, easy-plane anisotropy is shown to exert a predominant influence on the magnetic properties of the structure as compared to the influence of single-ion anisotropy. In the low-temperature range, the switching of the magnetic state of the ferromagnetic film in an external field leads to the appearance of specific features in hysteresis effects due to the competition of two types of magnetic anisotropy. The magnetic structure exhibits a size-induced transition from the behavior caused by easy-plane anisotropy to the behavior caused by single-ion anisotropy. The revealed size-induced transition is accompanied by a spin-flop effect.

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各种类型的各向异性竞争对磁性多层结构临界行为的影响

摘要研究了单离子各向异性和易面各向异性的竞争对多层结构 Co/Cu/Co 磁性能的影响。在临界温度 Tc 附近和低温范围 T\( \ll \) Tc 中，各向异性效应影响的特殊性都得到了揭示。使用各向异性海森堡模型对多层结构的磁特性进行了数值模拟。结果表明，在 Tc 附近，与单离子各向异性的影响相比，易面各向异性对结构磁性能的影响占主导地位。在低温范围内，由于两种磁各向异性的竞争，铁磁薄膜在外部磁场中磁性状态的切换导致磁滞效应出现特定特征。磁性结构呈现出由尺寸诱导的转变，从易平面各向异性引起的行为转变为单离子各向异性引起的行为。所揭示的尺寸诱导转变伴随着自旋翻转效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Experimental and Theoretical Physics 物理-物理：综合

CiteScore

1.90

自引率

9.10%

发文量

130

审稿时长

3-6 weeks

期刊介绍： Journal of Experimental and Theoretical Physics is one of the most influential physics research journals. Originally based on Russia, this international journal now welcomes manuscripts from all countries in the English or Russian language. It publishes original papers on fundamental theoretical and experimental research in all fields of physics: from solids and liquids to elementary particles and astrophysics.