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Title: Phase-controllable growth of ultrathin 2D magnetic FeTe crystals
Authors: Lixing Kang
Chen Ye
Xiaoxu Zhao 
Xieyu Zhou
Junxiong Hu
Qiao Li
Dan Liu
Chandreyee Manas Das
Jiefu Yang
Dianyi Hu
Jieqiong Chen
Xun Cao
Yong Zhang
Manzhang Xu
Jun Di
Dan Tian
Pin Song
Govindan Kutty
Qingsheng Zeng
Qundong Fu
Ya Deng
Jiadong Zhou
Ariando Ariando
Feng Miao
Guo Hong
Yizhong Huang
Stephen J. Pennycook 
Ken-Tye Yong
Wei Ji
Xiao Renshaw Wang
Zheng Liu
Keywords: Materials science
Nanoscience and technology
Issue Date: 24-Jul-2020
Publisher: Springer Nature
Citation: Lixing Kang, Chen Ye, Xiaoxu Zhao, Xieyu Zhou, Junxiong Hu, Qiao Li, Dan Liu, Chandreyee Manas Das, Jiefu Yang, Dianyi Hu, Jieqiong Chen, Xun Cao, Yong Zhang, Manzhang Xu, Jun Di, Dan Tian, Pin Song, Govindan Kutty, Qingsheng Zeng, Qundong Fu, Ya Deng, Jiadong Zhou, Ariando Ariando, Feng Miao, Guo Hong, Yizhong Huang, Stephen J. Pennycook, Ken-Tye Yong, Wei Ji, Xiao Renshaw Wang, Zheng Liu (2020-07-24). Phase-controllable growth of ultrathin 2D magnetic FeTe crystals. Nature Communications. ScholarBank@NUS Repository.
Abstract: Two-dimensional (2D) magnets with intrinsic ferromagnetic/antiferromagnetic (FM/AFM) ordering are highly desirable for future spintronic devices. However, the direct growth of their crystals is in its infancy. Here we report a chemical vapor deposition approach to controllably grow layered tetragonal and non-layered hexagonal FeTe nanoplates with their thicknesses down to 3.6 and 2.8 nm, respectively. Moreover, transport measurements reveal these obtained FeTe nanoflakes show a thickness-dependent magnetic transition. Antiferromagnetic tetragonal FeTe with the Néel temperature (TN) gradually decreases from 70 to 45 K as the thickness declines from 32 to 5 nm. And ferromagnetic hexagonal FeTe is accompanied by a drop of the Curie temperature (TC) from 220 K (30 nm) to 170 K (4 nm). Theoretical calculations indicate that the ferromagnetic order in hexagonal FeTe is originated from its concomitant lattice distortion and Stoner instability. This study highlights its potential applications in future spintronic devices.
Source Title: Nature Communications
ISSN: 20411723
DOI: 10.1038/s41467-020-17253-x
Appears in Collections:Staff Publications

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