基于铁榴石薄膜的外延纳米结构光学开关的理论和数值建模

IF 1.1 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Physics of Metals and Metallography Pub Date : 2024-07-08 DOI:10.1134/s0031918x23603104

V. V. Yurlov, K. A. Zvezdin, A. K. Zvezdin

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引用次数: 0

摘要

摘要本文从理论上分析了飞秒激光脉冲消磁效应导致的钆铁榴石薄膜磁化切换。利用双亚晶格铁氧体的拉格朗日形式主义，得到了有效拉格朗日、热力学势和瑞利耗散函数。分析了铁氧体薄膜的相图，并确定了系统的主要状态。构建了磁化切换图和磁体阶次参数动力学轨迹。分析了最有效磁化切换的磁场、温度和退磁值范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Theoretical and Numerical Modeling of Optical Switching of Epitaxial Nanostructures Based on Iron-Garnet Films

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Theoretical and Numerical Modeling of Optical Switching of Epitaxial Nanostructures Based on Iron-Garnet Films

Abstract

The paper presents a theoretical analysis of magnetization switching in a gadolinium ferrite garnet film due to the demagnetizing effect of a femtosecond laser pulse. Using the Lagrange formalism for a two-sublattice ferrimagnet, the effective Lagrangian, thermodynamic potential, and Rayleigh dissipative function are obtained. The phase diagram of the ferrite film is analyzed, and the main states of the system are identified. Magnetization switching diagrams and trajectories of the order parameter dynamics of the magnet are constructed. The ranges of magnetic fields, temperatures, and demagnetization values for the most efficient magnetization switching are analyzed.

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来源期刊

Physics of Metals and Metallography 工程技术-冶金工程

CiteScore

2.00

自引率

25.00%

发文量

108

审稿时长

3 months

期刊介绍： The Physics of Metals and Metallography (Fizika metallov i metallovedenie) was founded in 1955 by the USSR Academy of Sciences. Its scientific profile involves the theory of metals and metal alloys, their electrical and magnetic properties, as well as their structure, phase transformations, and principal mechanical properties. The journal also publishes scientific reviews and papers written by experts involved in fundamental, application, and technological studies. The annual volume of publications amounts to some 250 papers submitted from 100 leading national scientific institutions.