NiCo2O4薄膜的全光螺旋相关开关

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-05-28 DOI:10.1063/5.0253785

Ryunosuke Takahashi, Yann Le Guen, Suguru Nakata, Junta Igarashi, Julius Hohlfeld, Grégory Malinowski, Lingling Xie, Daisuke Kan, Yuichi Shimakawa, Stéphane Mangin, Hiroki Wadati

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引用次数: 0

摘要

全光开关（AOS）仅使用脉冲激光来控制磁化，为下一代磁记录设备提供了一种很有前途的方法。NiCo2O4 （NCO）薄膜是一种不含稀土的铁磁性氧化物，具有较高的居里温度和较强的垂直磁各向异性。本研究利用长时间激光脉冲和高重复率，在室温下对NCO薄膜进行了AOS实验。与以前的发现不同，我们在这里报告的AOS现象是螺旋相关的，并且可以用超短脉冲激光观察到。因此，在单个NCO薄膜中可以观察到两种不同类型的AOS，这取决于激光脉冲的特性和温度。

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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All-optical helicity-dependent switching in NiCo2O4 thin films

All-optical switching (AOS) involves manipulating magnetization using only a pulsed laser, presenting a promising approach for next-generation magnetic recording devices. NiCo2O4 (NCO) thin films, a rare-earth-free ferrimagnetic oxide, exhibit a high Curie temperature and strong perpendicular magnetic anisotropy. This study demonstrates AOS in NCO thin films at room temperature using long-duration laser pulses and high repetition rates. Unlike previous findings, the AOS phenomena we report here are helicity-dependent and observable with an ultrashort pulsed laser. Consequently, two distinct types of AOS can be observed in a single NCO thin film, contingent on the characteristics of the laser pulses and temperature.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.