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Title: (Sr{sub 1-x}Na{sub x})(Cd{sub 1-x}Mn{sub x}){sub 2}As{sub 2}: A new charge and spin doping decoupled diluted magnetic semiconductors with CaAl{sub 2}Si{sub 2}-type structure

Abstract

We report the synthesis and characterization of a new bulk diluted ferromagnetic semiconductor via Na and Mn co-doping in SrCd{sub 2}As{sub 2} with a hexagonal CaAl{sub 2}Si{sub 2}-type structure. Together with carrier doping via (Sr,Na) substitution, spin doping via (Cd,Mn) substitution results in ferromagnetic order with Curie temperature of T{sub C} up to 13 K. Negative magnetoresistance is assigned to weak localization at low temperatures, where the magnetization of samples becomes saturated. The hexagonal structure of (Sr{sub 1−x}Na{sub x})(Cd{sub 1−x}Mn{sub x}){sub 2}As{sub 2} can be acted as a promising candidate for spin manipulations owing to its relatively small coercive field of less than 24 Oe.

Authors:
; ; ; ; ; ; ;  [1];  [2];  [1];  [3]
  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)
  2. School of Materials Science and Engineering, Hefei University of Technology, Hefei, Anhui 230009 (China)
  3. (China)
Publication Date:
OSTI Identifier:
22598873
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 120; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CARRIERS; CURIE POINT; MAGNETIC SEMICONDUCTORS; MAGNETIZATION; MAGNETORESISTANCE; SPIN; SYNTHESIS; TEMPERATURE RANGE 0065-0273 K

Citation Formats

Chen, Bijuan, Deng, Zheng, Li, Wenmin, Gao, Moran, Zhao, Guoqiang, Yu, Shuang, Wang, Xiancheng, Liu, Qingqing, Li, Zhi, Jin, Changqing, E-mail: Jin@iphy.ac.cn, and Collaborative Innovation Center of Quantum Matter, Beijing 100190. (Sr{sub 1-x}Na{sub x})(Cd{sub 1-x}Mn{sub x}){sub 2}As{sub 2}: A new charge and spin doping decoupled diluted magnetic semiconductors with CaAl{sub 2}Si{sub 2}-type structure. United States: N. p., 2016. Web. doi:10.1063/1.4961565.
Chen, Bijuan, Deng, Zheng, Li, Wenmin, Gao, Moran, Zhao, Guoqiang, Yu, Shuang, Wang, Xiancheng, Liu, Qingqing, Li, Zhi, Jin, Changqing, E-mail: Jin@iphy.ac.cn, & Collaborative Innovation Center of Quantum Matter, Beijing 100190. (Sr{sub 1-x}Na{sub x})(Cd{sub 1-x}Mn{sub x}){sub 2}As{sub 2}: A new charge and spin doping decoupled diluted magnetic semiconductors with CaAl{sub 2}Si{sub 2}-type structure. United States. doi:10.1063/1.4961565.
Chen, Bijuan, Deng, Zheng, Li, Wenmin, Gao, Moran, Zhao, Guoqiang, Yu, Shuang, Wang, Xiancheng, Liu, Qingqing, Li, Zhi, Jin, Changqing, E-mail: Jin@iphy.ac.cn, and Collaborative Innovation Center of Quantum Matter, Beijing 100190. Sun . "(Sr{sub 1-x}Na{sub x})(Cd{sub 1-x}Mn{sub x}){sub 2}As{sub 2}: A new charge and spin doping decoupled diluted magnetic semiconductors with CaAl{sub 2}Si{sub 2}-type structure". United States. doi:10.1063/1.4961565.
@article{osti_22598873,
title = {(Sr{sub 1-x}Na{sub x})(Cd{sub 1-x}Mn{sub x}){sub 2}As{sub 2}: A new charge and spin doping decoupled diluted magnetic semiconductors with CaAl{sub 2}Si{sub 2}-type structure},
author = {Chen, Bijuan and Deng, Zheng and Li, Wenmin and Gao, Moran and Zhao, Guoqiang and Yu, Shuang and Wang, Xiancheng and Liu, Qingqing and Li, Zhi and Jin, Changqing, E-mail: Jin@iphy.ac.cn and Collaborative Innovation Center of Quantum Matter, Beijing 100190},
abstractNote = {We report the synthesis and characterization of a new bulk diluted ferromagnetic semiconductor via Na and Mn co-doping in SrCd{sub 2}As{sub 2} with a hexagonal CaAl{sub 2}Si{sub 2}-type structure. Together with carrier doping via (Sr,Na) substitution, spin doping via (Cd,Mn) substitution results in ferromagnetic order with Curie temperature of T{sub C} up to 13 K. Negative magnetoresistance is assigned to weak localization at low temperatures, where the magnetization of samples becomes saturated. The hexagonal structure of (Sr{sub 1−x}Na{sub x})(Cd{sub 1−x}Mn{sub x}){sub 2}As{sub 2} can be acted as a promising candidate for spin manipulations owing to its relatively small coercive field of less than 24 Oe.},
doi = {10.1063/1.4961565},
journal = {Journal of Applied Physics},
number = 8,
volume = 120,
place = {United States},
year = {Sun Aug 28 00:00:00 EDT 2016},
month = {Sun Aug 28 00:00:00 EDT 2016}
}