Rapid Kerr imaging characterization of the magnetic properties of two-dimensional ferromagnetic Fe3GeTe2
Cai, Li1,2,3; Yu, Chenglin1,2,3; Liu, Liangyang1,2,3; Xia, Wei4,5; Zhou, Heng-An1,2,3; Zhao, Le1,2,3; Dong, Yiqing1,2,3; Xu, Teng1,2,3; Wang, Zidong1,2,3; Guo, Yanfeng4,5; Zhao, Yonggang1,2,3; Zhang, Jinsong1,2,3; Yang, Luyi1,2,3; Yang, Lexian1,2,3; Jiang, Wanjun1,2,3
2020-11-09
Source PublicationAPPLIED PHYSICS LETTERS
ISSN0003-6951
Volume117Issue:19
Status已发表
DOI10.1063/5.0030607
Abstract

Van der Waals (vdW) ferromagnetic materials have attracted considerable attention in the nanomaterial community, which could provide a unique platform to study magnetism at the nanoscale. Along this direction, many interesting results have been reported, including the electric field control of magnetism and topological spin textures. In this report, we present a rapid and spatially resolved imaging method to study the dimensionality-dependent magnetic properties of Fe3GeTe2 (FGT) nanoflakes. Our method is named as polar magneto-optical Kerr imaging microscopy magnetometry (p-MIMM), which is made possible by analyzing the intensity evolution of wide-field polar magneto-optical Kerr effect (MOKE) images that were collected by varying magnetic fields, thicknesses, and temperatures. In particular, spatially resolved MOKE hysteresis loops can be acquired in the FGT nanoflakes with a submicrometer resolution. By analyzing the evolution of the relative (saturated) MOKE intensity as a function of temperature, we further study the critical exponent and universality class and its dependence on the FGT nanoflake thickness. Combining the polar MOKE images with the calculated MOKE hysteresis loops, a detailed magnetic phase diagram summarizing an evolution of the stripe domain, single domain, and paramagnetic state is further validated. Our results suggest that the wide-field p-MIMM can be conveniently used for rapidly examining the magnetic properties of versatile vdW magnetic materials.

Indexed BySCI
Funding ProjectNational Key R&D Program of China[2017YFA0206200][2016YFA0302300] ; Basic Science Center Project of NSFC[51788104] ; National Natural Science Foundation of China[11774194][51831005][1181131008][1181101082] ; Beijing Natural Science Foundation[Z190009]
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:000591866200001
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://kms.shanghaitech.edu.cn/handle/2MSLDSTB/124610
Collection信息科学与技术学院_本科生
物质科学与技术学院_PI研究组_郭艳峰组
信息科学与技术学院_硕士生
物质科学与技术学院_公共科研平台_拓扑物理实验室
Corresponding AuthorJiang, Wanjun
Affiliation1.Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China
2.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
3.Tsinghua Univ, Frontier Sci Ctr Quantum Informat, Beijing 100084, Peoples R China
4.Shanghai Tech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
5.CAS Shanghai Sci Res Ctr, Shanghai 201210, Peoples R China
Recommended Citation
GB/T 7714
Cai, Li,Yu, Chenglin,Liu, Liangyang,et al. Rapid Kerr imaging characterization of the magnetic properties of two-dimensional ferromagnetic Fe3GeTe2[J]. APPLIED PHYSICS LETTERS,2020,117(19).
APA Cai, Li.,Yu, Chenglin.,Liu, Liangyang.,Xia, Wei.,Zhou, Heng-An.,...&Jiang, Wanjun.(2020).Rapid Kerr imaging characterization of the magnetic properties of two-dimensional ferromagnetic Fe3GeTe2.APPLIED PHYSICS LETTERS,117(19).
MLA Cai, Li,et al."Rapid Kerr imaging characterization of the magnetic properties of two-dimensional ferromagnetic Fe3GeTe2".APPLIED PHYSICS LETTERS 117.19(2020).
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