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Influence of microstructural changes on magnetic refrigeration performance for La(Fe0.94Co0.06)(11.8)Si-1.2 alloys during magnetic field cycling
Yuan, Z. M.; He, J.; Yang, L.; Xia, Z. J.; Zhao, D. L.; You, C. Y.; Ren, W. J.; jun50543@yahoo.com
2015
Source PublicationJOURNAL OF APPLIED PHYSICS
ISSN0021-8979
Volume117Issue:17Pages:-
AbstractNaZn13-type La(Fe0.94Co0.06)(11.8)Si-1.2 alloys were manufactured to investigate the influence of their microstructural change on magnetic refrigeration performance during magnetic field cycling. The magnetic refrigeration performance measurements indicate that both the large magnetic entropy change value (Delta S = 14.1 J kg(-1) K-1) and maximum adiabatic temperature change (Delta T = 2.2K) are favorable for the alloys to be superior candidate of magnetic refrigerants. However, the alloys exhibit nearly 10% decrease of Delta S and Delta T when they performed cycling ten-thousand times. More than thousand times of cycles induce local stress and grain cleavages presented by the accumulation of irreversible microstructure changes such as micro-cracks and sub-boundaries. According to the domain observation for the alloys with different field cycles, these microstructure characteristics accompany with the reconfiguration of the local magnetic domains and increase of domain wall energy, which are considered to be the reason of the decrease of Delta S. (c) 2015 AIP Publishing LLC.
description.department[yuan, z. m. ; he, j. ; yang, l. ; xia, z. j. ; zhao, d. l.] cent iron & steel res inst, funct mat res inst, beijing 100081, peoples r china ; [yuan, z. m. ; he, j. ; yang, l. ; xia, z. j. ; zhao, d. l.] beijing key lab precis alloys, beijing 100081, peoples r china ; [you, c. y.] xian univ technol, sch mat sci & engn, xian 710048, peoples r china ; [ren, w. j.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
Funding OrganizationInternational Science and Technology Cooperation Projects of China [2012DAF51300]; National Natural Science Foundation of China [51371055, 51371140]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74917
Collection中国科学院金属研究所
Corresponding Authorjun50543@yahoo.com
Recommended Citation
GB/T 7714
Yuan, Z. M.,He, J.,Yang, L.,et al. Influence of microstructural changes on magnetic refrigeration performance for La(Fe0.94Co0.06)(11.8)Si-1.2 alloys during magnetic field cycling[J]. JOURNAL OF APPLIED PHYSICS,2015,117(17):-.
APA Yuan, Z. M..,He, J..,Yang, L..,Xia, Z. J..,Zhao, D. L..,...&jun50543@yahoo.com.(2015).Influence of microstructural changes on magnetic refrigeration performance for La(Fe0.94Co0.06)(11.8)Si-1.2 alloys during magnetic field cycling.JOURNAL OF APPLIED PHYSICS,117(17),-.
MLA Yuan, Z. M.,et al."Influence of microstructural changes on magnetic refrigeration performance for La(Fe0.94Co0.06)(11.8)Si-1.2 alloys during magnetic field cycling".JOURNAL OF APPLIED PHYSICS 117.17(2015):-.
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