期刊
SOLID STATE COMMUNICATIONS
卷 151, 期 19, 页码 1359-1362出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2011.06.017
关键词
Metamagnetic transitions; Magnetocaloric effect
资金
- National Natural Science Foundation of China [50701022, 50831006]
- Program for New Century Excellent Talents of China [NCET-08-0278]
The magnetic phase transitions and the magnetocaloric effects in MnNi1-xCoxGe (x = 0.38 and 0.40) alloys were investigated. The substitution of Co for Ni in the MnNiGe antiferromagnet results in the metamagnetic transitions from antiferromagnetic to ferromagnetic state, which associates with very small thermal and magnetic hystereses. Positive and negative values of magnetic entropy changes are exhibited around the metamagnetic transition temperature and Curie temperature, respectively. The relatively large refrigerant capacity in low magnetic field along with the good reversibility suggest that MnNi1-xCoxGe (x = 0.38 and 0.40) alloys are potential candidates for magnetic refrigeration. (C) 2011 Elsevier Ltd. All rights reserved.
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