Covalent 2D Cr2Te3 ferromagnet

被引：32

作者：

Bian, Mengying ^{[1
,2
,3
]}

Kamenskii, Aleksandr N. ^{[4
,5
]}

Han, Mengjiao ^{[6
,7
]}

Li, Wenjie ^{[8
]}

Wei, Sichen ^{[9
]}

Tian, Xuezeng ^{[10
,11
]}

Eason, David B. ^{[9
]}

Sun, Fan ^{[3
]}

He, Keke ^{[12
]}

Hui, Haolei ^{[3
]}

Yao, Fei ^{[9
]}

Sabirianov, Renat ^{[13
]}

Bird, Jonathan P. ^{[12
]}

Yang, Chunlei ^{[8
]}

Miao, Jianwei ^{[10
,11
]}

Lin, Junhao ^{[6
,7
]}

Crooker, Scott A. ^{[4
]}

Hou, Yanglong ^{[1
,2
]}

Zeng, Hao ^{[3
]}

机构：

[1] Peking Univ, Dept Mat Sci & Engn, Beijing Key Lab Magnetoelectr Mat & Devices, Beijing, Peoples R China

[2] Peking Univ, Dept Mat Sci & Engn, Beijing Innovat Ctr Engn Sci & Adv Technol, Beijing, Peoples R China

[3] SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA

[4] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA

[5] Tech Univ Dortmund, Expt Phys 2, Dortmund, Germany

[6] Southern Univ Sci & Technol, Dept Phys, Shenzhen, Peoples R China

[7] Southern Univ Sci & Technol, Shenzhen Key Lab Adv Quantum Funct Mat & Devices, Shenzhen, Peoples R China

[8] Chinese Acad Sci, Shenzhen Inst Adv Technol, Ctr Informat Photon & Energy Mat, Shenzhen, Peoples R China

[9] SUNY Buffalo, Dept Mat Design & Innovat, Buffalo, NY USA

[10] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA USA

[11] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA USA

[12] SUNY Buffalo, Dept Elect Engn, Buffalo, NY USA

[13] Univ Nebraska, Dept Phys, Omaha, NE USA

来源：

MATERIALS RESEARCH LETTERS | 2021年 / 9卷 / 05期

基金：

国家重点研发计划; 中国博士后科学基金;

关键词：

2D magnets; half-metallicity; Cr2Te3; MOKE microscopy; magnetic anisotropy;

D O I：

10.1080/21663831.2020.1865469

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To broaden the scope of van der Waals 2D magnets, we report the synthesis and magnetism of covalent 2D magnetic Cr2Te3 with a thickness down to one-unit-cell. The 2D Cr2Te3 crystals exhibit robust ferromagnetism with a Curie temperature of 180 K, a large perpendicular anisotropy of 7 x 10(5) J m(-3), and a high coercivity of similar to 4.6 kG at 20 K. First principles calculations further show a transition from canted to collinear ferromagnetism, a transition from perpendicular to in-plane anisotropy, and emergent half-metallic behavior in atomically-thin Cr2Te3, suggesting its potential application for injecting carriers with high spin polarization into spintronic devices. IMPACT STATEMENT A T-C of 180 K, a perpendicular anisotropy of 7 x 10(5) J m(-3), and a high coercivity of similar to 4.6 kG were achieved in covalent Cr2Te3 2D ferromagnets.

引用

页码：205 / 212

页数：8

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