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Reversible magnetocaloric effect and critical behaviors in Mn1.9-xCoxSn compounds
Feng, W. J.; Gao, L.; Fan, X. L.; Li, C. M.; Wang, S.; Hong, X.; Sun, X. S.; Gao, M.; Deng, Y. F.
2019-03-01
Source PublicationMATERIALS RESEARCH EXPRESS
ISSN2053-1591
Volume6Issue:3
AbstractThe structure, magnetic properties and magnetocaloric effect in the Mn1.9-xCoxSn (x = 0, 0.2, 0.4) compounds have been investigated. The reversible magnetic-entropy changes Delta S(m)(max )of Mn1.9Sn and Mn1.7Co0.2Sn are 2.13 (209 K) and 1.08 (113 K) J kg(-1) K-1, respectively, for magnetic field change between 0-5 T. The critical exponents in Mn1.9Sn and Mn1.7Co0.2Sn compounds have been determined. In the critical region, the data points of magnetization, field and temperature near T-C fall into two universal curves. By analysis on the critical exponents, we thought that the short-range ferri-magnetic order occurs in x = 0 compound at T < T-C and in x = 0.2 one at T > T-C. The analysis on long-range attractive interactions J(r) reveals the dominant long-range interactions in the vicinity of T-C in both compounds, besides a little short-range ferro- or ferri-magnetic order.
Keywordmagnetocaloric effect critical exponents modified Arrott plot long-range interaction
Indexed BySCI
Language英语
WOS IDWOS:000452700500002
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81354
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Feng, W. J.,Gao, L.,Fan, X. L.,et al. Reversible magnetocaloric effect and critical behaviors in Mn1.9-xCoxSn compounds[J]. MATERIALS RESEARCH EXPRESS,2019,6(3).
APA Feng, W. J..,Gao, L..,Fan, X. L..,Li, C. M..,Wang, S..,...&Deng, Y. F..(2019).Reversible magnetocaloric effect and critical behaviors in Mn1.9-xCoxSn compounds.MATERIALS RESEARCH EXPRESS,6(3).
MLA Feng, W. J.,et al."Reversible magnetocaloric effect and critical behaviors in Mn1.9-xCoxSn compounds".MATERIALS RESEARCH EXPRESS 6.3(2019).
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