利用金刚石量子传感器对软磁薄膜的磁化过程进行宽场成像

IF 2.3 4区物理与天体物理 Q3 PHYSICS, APPLIED Applied Physics Express Pub Date : 2023-12-29 DOI:10.35848/1882-0786/ad1002

Ryota Kitagawa, Teruo Kohashi, Takeyuki Tsuji, Shunsuke Nagata, Aoi Nakatsuka, Honami Nitta, Yota Takamura, Shigeki Nakagawa, Takayuki Iwasaki and Mutsuko Hatano

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引用次数: 0

摘要

利用金刚石量子传感器对软磁 CoFeB-SiO2 薄膜的磁化过程进行了成像，金刚石量子传感器具有沿[111]方向完美排列的氮空位中心，由 CVD 形成。在薄膜边缘，易轴和硬轴方向对外部磁场表现出不同的响应，这与磁光克尔效应显微镜观察到的响应一致。此外，量子钻石成像技术还能观察到沿着畴壁的不连续磁化，即不均匀磁荷（MC）。量子钻石成像有助于通过 MCs 实现可视化，如材料中的不规则性和相邻畴中磁化的相对方向。

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Wide-field imaging of the magnetization process in soft magnetic-thin film using diamond quantum sensors

The magnetization process of a soft magnetic CoFeB-SiO2 thin film was imaged using diamond quantum sensors with perfectly aligned nitrogen-vacancy centers along the [111] direction formed by CVD. Around the film edge, the easy and hard axes directions exhibited different responses to the external magnetic field, consistent with ones observed by magneto-optical Kerr effect microscopy. Moreover, quantum diamond imaging could observe discontinuous magnetization along domain walls as non-uniform magnetic charges (MCs). Quantum diamond imaging would help in visualization through MCs, such as irregularity in the material and relative orientation of magnetizations in neighboring domains.

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来源期刊

Applied Physics Express 物理-物理：应用

CiteScore

4.80

自引率

8.70%

发文量

310

审稿时长

1.2 months

期刊介绍： Applied Physics Express (APEX) is a letters journal devoted solely to rapid dissemination of up-to-date and concise reports on new findings in applied physics. The motto of APEX is high scientific quality and prompt publication. APEX is a sister journal of the Japanese Journal of Applied Physics (JJAP) and is published by IOP Publishing Ltd on behalf of the Japan Society of Applied Physics (JSAP).