期刊
SCRIPTA MATERIALIA
卷 67, 期 2, 页码 173-176出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.04.008
关键词
Antiperovskite compounds; Magnetism; Lattice; Electronic transport properties
类别
资金
- National Natural Science Foundation of China (NSFC) [51172012, 91122026]
- Ph.D. Programs Foundation of Ministry of Education of China [20111102110026]
- Key Laboratory of Micro-nano Measurement, Manipulation and Physics (Ministry of Education)
Antiperovskite compounds Mn3Ni1-xAgxN (x = 0.2, 0.5, 0.8, 1.0) were synthesized and investigated. Around room temperature, a low-temperature coefficient of resistivity, L-TCR, and isotropic negative thermal expansion were observed, accompanying the magnetic transitions, which provides strong evidence of a correlation between spin, lattice and charge. The L-TCR was found to be 47 ppm K-1 (285-350 K) for Mn3AgN. It is thought that spin-disorder scattering is responsible for the L-TCR behavior. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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