Covalent 2D Cr2Te3 ferromagnet

Mengying Bian; Aleksandr N. Kamenskii; Mengjiao Han; Wenjie Li; Sichen Wei; Xuezeng Tian; David B. Eason; Fan Sun; Keke He; Haolei Hui; Fei Yao; Renat Sabirianov; Jonathan P. Bird; Chunlei Yang; Jianwei Miao; Junhao Lin; Scott A. Crooker; Yanglong Hou; Hao Zeng

doi:10.1080/21663831.2020.1865469

Covalent 2D Cr₂Te₃ ferromagnet

Mengying Bian, Aleksandr N. Kamenskii, Mengjiao Han, Wenjie Li, Sichen Wei, Xuezeng Tian, David B. Eason, Fan Sun, Keke He, Haolei Hui, Fei Yao, Renat Sabirianov, Jonathan P. Bird, Chunlei Yang, Jianwei Miao, Junhao Lin, Scott A. Crooker, Yanglong Hou, Hao Zeng

Physics

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

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 × 10⁵ J m⁻³, and a high coercivity of ∼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.

Original language	English (US)
Pages (from-to)	205-212
Number of pages	8
Journal	Materials Research Letters
Volume	9
Issue number	5
DOIs	https://doi.org/10.1080/21663831.2020.1865469
State	Published - 2021

Keywords

2D magnets
CrTe
MOKE microscopy
half-metallicity
magnetic anisotropy

ASJC Scopus subject areas

Materials Science(all)

Access to Document

10.1080/21663831.2020.1865469

Cite this

Covalent 2D Cr₂Te₃ ferromagnet. / Bian, Mengying; Kamenskii, Aleksandr N.; Han, Mengjiao; Li, Wenjie; Wei, Sichen; Tian, Xuezeng; Eason, David B.; Sun, Fan; He, Keke; Hui, Haolei; Yao, Fei; Sabirianov, Renat; Bird, Jonathan P.; Yang, Chunlei; Miao, Jianwei; Lin, Junhao; Crooker, Scott A.; Hou, Yanglong; Zeng, Hao.

In: Materials Research Letters, Vol. 9, No. 5, 2021, p. 205-212.

Research output: Contribution to journal › Article › peer-review

Bian, Mengying ; Kamenskii, Aleksandr N. ; Han, Mengjiao ; Li, Wenjie ; Wei, Sichen ; Tian, Xuezeng ; Eason, David B. ; Sun, Fan ; He, Keke ; Hui, Haolei ; Yao, Fei ; Sabirianov, Renat ; Bird, Jonathan P. ; Yang, Chunlei ; Miao, Jianwei ; Lin, Junhao ; Crooker, Scott A. ; Hou, Yanglong ; Zeng, Hao. / Covalent 2D Cr₂Te₃ ferromagnet. In: Materials Research Letters. 2021 ; Vol. 9, No. 5. pp. 205-212.

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title = "Covalent 2D Cr2Te3 ferromagnet",

abstract = "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 × 105 J m−3, and a high coercivity of ∼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.",

keywords = "2D magnets, CrTe, MOKE microscopy, half-metallicity, magnetic anisotropy",

author = "Mengying Bian and Kamenskii, {Aleksandr N.} and Mengjiao Han and Wenjie Li and Sichen Wei and Xuezeng Tian and Eason, {David B.} and Fan Sun and Keke He and Haolei Hui and Fei Yao and Renat Sabirianov and Bird, {Jonathan P.} and Chunlei Yang and Jianwei Miao and Junhao Lin and Crooker, {Scott A.} and Yanglong Hou and Hao Zeng",

note = "Funding Information: M. B., A. N. K. and M. H. contributed equally to this work. Work supported by US NSF (MRI-1229208, CBET-1510121) and UB VPRED seed grant. Work at the NHMFL supported by NSF DMR-1644779, the State of Florida, and DOE. Y. H. and M. B. thank National Key R&D Program of China (2017YFA0206301), the NSFC (51631001) and the China Postdoctoral Science Foundation (2020M670042). J.L. and M.H. thank the support from NSFC (grant number11974156), Guangdong Province (grant numbers 2019A050510001, 2019ZT08C044), Shenzhen Municipality (No. ZDSYS20190902092905285, KQTD20190929173815000), and SUSTech Core Research Facilities and Pico Center. Publisher Copyright: {\textcopyright} 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.",

year = "2021",

doi = "10.1080/21663831.2020.1865469",

language = "English (US)",

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T1 - Covalent 2D Cr2Te3 ferromagnet

AU - Bian, Mengying

AU - Kamenskii, Aleksandr N.

AU - Han, Mengjiao

AU - Li, Wenjie

AU - Wei, Sichen

AU - Tian, Xuezeng

AU - Eason, David B.

AU - Sun, Fan

AU - He, Keke

AU - Hui, Haolei

AU - Yao, Fei

AU - Sabirianov, Renat

AU - Bird, Jonathan P.

AU - Yang, Chunlei

AU - Miao, Jianwei

AU - Lin, Junhao

AU - Crooker, Scott A.

AU - Hou, Yanglong

AU - Zeng, Hao

N1 - Funding Information: M. B., A. N. K. and M. H. contributed equally to this work. Work supported by US NSF (MRI-1229208, CBET-1510121) and UB VPRED seed grant. Work at the NHMFL supported by NSF DMR-1644779, the State of Florida, and DOE. Y. H. and M. B. thank National Key R&D Program of China (2017YFA0206301), the NSFC (51631001) and the China Postdoctoral Science Foundation (2020M670042). J.L. and M.H. thank the support from NSFC (grant number11974156), Guangdong Province (grant numbers 2019A050510001, 2019ZT08C044), Shenzhen Municipality (No. ZDSYS20190902092905285, KQTD20190929173815000), and SUSTech Core Research Facilities and Pico Center. Publisher Copyright: © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

PY - 2021

Y1 - 2021

N2 - 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 × 105 J m−3, and a high coercivity of ∼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.

AB - 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 × 105 J m−3, and a high coercivity of ∼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.

KW - 2D magnets

KW - CrTe

KW - MOKE microscopy

KW - half-metallicity

KW - magnetic anisotropy

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