通过飞秒激光脉冲实现具有面内各向异性的GdFeCo薄膜中的磁化翻转

Magnetization Switching in the GdFeCo Films with In-Plane Anisotropy via Femtosecond Laser Pulses.

作者信息

Ignatyeva Daria O, Kapralov Pavel O, Prabhakara Kiran Horabail, Yoshikawa Hiroki, Tsukamoto Arata, Belotelov Vladimir I

机构信息

Physics and Technology Institute, V.I. Vernadsky Crimean Federal University, 295007 Simferopol, Russia.

Russian Quantum Center, 121205 Moscow, Russia.

出版信息

Molecules. 2021 Oct 23;26(21):6406. doi: 10.3390/molecules26216406.

DOI:10.3390/molecules26216406

PMID:34770815

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8588330/

Abstract

Ferrimagnetic rare-earth substituted metal alloys GdFeCo were shown to exhibit the phenomenon of all-optical magnetization switching via femtosecond laser pulses. All-optical magnetization switching has been comprehensively investigated in out-of-plane magnetized GdFeCo films; however, the films with the in-plane magnetic anisotropy have not yet been studied in detail. We report experimental observations of the magnetization switching of in-plane magnetized GdFeCo films by means of the femtosecond laser pulses in the presence of a small magnetic field of about 40 µT. The switching effect has a threshold both in the applied magnetic field and in the light intensity.

摘要

亚铁磁性稀土取代金属合金钆铁钴被证明通过飞秒激光脉冲展现出全光磁化翻转现象。全光磁化翻转已在垂直于平面磁化的钆铁钴薄膜中得到全面研究；然而，具有面内磁各向异性的薄膜尚未得到详细研究。我们报告了在约40微特斯拉的小磁场存在下，通过飞秒激光脉冲对平面内磁化的钆铁钴薄膜进行磁化翻转的实验观察结果。该翻转效应在施加磁场和光强方面均有一个阈值。