期刊
SOLID STATE COMMUNICATIONS
卷 151, 期 23, 页码 1776-1779出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2011.08.029
关键词
Magnetically ordered materials; Heat capacity; Thermal expansion; Thermodynamic properties
资金
- JSPS [23740245, 22246083]
- Grants-in-Aid for Scientific Research [23740245, 22246083] Funding Source: KAKEN
The thermodynamic properties of the spinel ferromagnetic compounds CdCr2Se4 and CdCr2S4 have been investigated by making heat capacity and thermal expansion measurements on single crystals. For both compounds, the ferromagnetic transition is marked by lambda-type thermal anomalies, and the results provide a pressure dependence of the transition temperatures that is in agreement with direct measurements. Below the transition, CdCr2S4 shows an anomalous heat-capacity contribution and negative thermal expansion, which are in contrast to the conventional behavior found in CdCr2Se4. (C) 2011 Elsevier Ltd. All rights reserved.
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