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The effect of boron doping on crystal structure, magnetic properties and magnetocaloric effect of DyCo2

TitleThe effect of boron doping on crystal structure, magnetic properties and magnetocaloric effect of DyCo2
Publication TypeJournal Article
Year of Publication2016
AuthorsWang, CL, Liu, J, Mudryk, Y, Gschneidner, KA, Long, Y, Pecharsky, VK
JournalJournal of Magnetism and Magnetic Materials
Volume405
Pagination122-128
Date Published05
Type of ArticleArticle
ISBN Number0304-8853
Accession NumberWOS:000368660100018
Keywordsalloys, compound, entropy change, itinerant-electron metamagnetism, Magnetic entropy changes, Magnetic properties, Magnetic transition nature, Magnetic viscosity, Magnetocaloric effect, substitution, transition
Abstract

The magnetic properties and magnetic entropy changes of DyCo2B, (x=0, 0.05, 0.1, and 0.2) alloys were investigated. The Curie temperature (T-C) increases with increasing B concentration. The frequency dependence of ac magnetic susceptibility of DyCo2 caused by the narrow domain wall pinning effect is depressed by B doping, but the coercivity and the magnetic viscosity are prominently increased in the B doped alloys. The magnetic transition nature of DyCo2Bx changes from the first -order to the second -order with increasing x, which leads to the decrease of the maximum magnetic entropy change. However, the relative cooling power (RCP) of DyCo2 and the B doped alloys remains nearly constant. (C) 2015 Elsevier B.V. All rights reserved.

DOI10.1016/j.jmmm.2015.12.062
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