TY - JOUR
T1 - Antiferromagnetic α-MnTe
T2 - Molten-Salt-Assisted Chemical Vapor Deposition Growth and Magneto-Transport Properties
AU - Li, Shuaixing
AU - Wu, Jianghua
AU - Liang, Binxi
AU - Liu, Luhao
AU - Zhang, Wei
AU - Wazir, Nasrullah
AU - Zhou, Jian
AU - Liu, Yuwei
AU - Nie, Yuefeng
AU - Hao, Yufeng
AU - Wang, Peng
AU - Wang, Lin
AU - Shi, Yi
AU - Li, Songlin
N1 - Publisher Copyright:
© 2022 American Chemical Society.
PY - 2022/1/25
Y1 - 2022/1/25
N2 - Antiferromagnetic (AF) materials are attracting increasing interest for research in magnetic physics and spintronics. Here, we report a controllable synthesis of room-temperature AF α-MnTe nanocrystals (Néel temperature ∼307 K) via the molten-salt-assisted chemical vapor deposition method. The growth kinetics are investigated regarding the dependence of flake dimension and macroscopic shape on growth time and temperature. The high crystalline quality and atomic structure are confirmed by various crystallographic characterization means. Cryogenic magneto-transport measurements reveal anisotropic magnetoresistance (MR) response and complicated dependence of MR on temperature, owing to the subtle competition among multiple scattering mechanisms of thermally excited magnetic disorders (magnon drag), magnetic transition, and thermally populated lattice phonons. Overall positive MR behavior with two transitions in magnitude is observed when out-of-plane external magnetic field (B) is applied, while a transition from negative to positive MR response is recorded when in-plane B is applied. The rich magnetic transport properties render α-MnTe a promising material for exploiting functional components in magnetic devices.
AB - Antiferromagnetic (AF) materials are attracting increasing interest for research in magnetic physics and spintronics. Here, we report a controllable synthesis of room-temperature AF α-MnTe nanocrystals (Néel temperature ∼307 K) via the molten-salt-assisted chemical vapor deposition method. The growth kinetics are investigated regarding the dependence of flake dimension and macroscopic shape on growth time and temperature. The high crystalline quality and atomic structure are confirmed by various crystallographic characterization means. Cryogenic magneto-transport measurements reveal anisotropic magnetoresistance (MR) response and complicated dependence of MR on temperature, owing to the subtle competition among multiple scattering mechanisms of thermally excited magnetic disorders (magnon drag), magnetic transition, and thermally populated lattice phonons. Overall positive MR behavior with two transitions in magnitude is observed when out-of-plane external magnetic field (B) is applied, while a transition from negative to positive MR response is recorded when in-plane B is applied. The rich magnetic transport properties render α-MnTe a promising material for exploiting functional components in magnetic devices.
UR - http://www.scopus.com/inward/record.url?scp=85123912399&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.1c04066
DO - 10.1021/acs.chemmater.1c04066
M3 - 文章
AN - SCOPUS:85123912399
SN - 0897-4756
VL - 34
SP - 873
EP - 880
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 2
ER -