（210）取向铁石榴石薄膜磁畴成像的非线性光学显微镜

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-09-20 DOI:10.1016/j.optmat.2025.117537

Nikolai V. Mitetelo , Mikhail A. Stepanov , Andrey A. Guskov , Sergey D. Lavrov , Alexander P. Pyatakov , Elena D. Mishina

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引用次数: 0

摘要

我们在Gd3Ga5O12衬底上进行了外延生长（BiLu）3(FeGa)5O12薄膜磁化诱导二次谐波产生的偏振分辨非线性光学研究。该方法在亚波长尺度上对磁化矢量方向敏感，可以在均匀磁化和非均匀磁化区域中显示不同的磁态。在这个空间磁分布附近，非线性光信号对局部微磁阶的显著敏感性被观察到并描述。我们的实验随后分析了材料磁化率的晶体学和磁性，证明了高质量的磁化分布可视化和估计其参数的可能性。这些参数对于这种磁态的外部操纵至关重要，需要更少的能量来重新配置结构的状态，以实现高效的存储器和高性能的计算设备。

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Nonlinear optical microscopy for magnetic domain imaging in (210)-Oriented iron garnet film

We performed polarization-resolved nonlinear optical studies of magnetization-induced second harmonic generation in epitaxially grown (BiLu)₃(FeGa)₅O₁₂ films on a Gd₃Ga₅O₁₂ substrate. Being sensitive to the magnetization vector orientation on a subwavelength scale, this method visualizes different magnetic states in uniformly and non-uniformly magnetized regions. In the vicinity of this spatial magnetic distribution, a pronounced sensitivity of nonlinear optical signal to local micromagnetic order is observed and described. Our experiments followed by analysis of the crystallographic and magnetic properties of material's susceptibility demonstrate a high-quality visualization of the magnetization distribution and the possibility to estimate its parameters. These parameters are of crucial importance for the external manipulation of such magnetic states, requiring less energy to reconfigure the state of the structure for efficient memory and computing devices with high performance.

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.