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Modification of magnetic and magnetocaloric properties of Dy-Co-Al bulk metallic glass introduced by hydrogen

TitleModification of magnetic and magnetocaloric properties of Dy-Co-Al bulk metallic glass introduced by hydrogen
Publication TypeJournal Article
Year of Publication2010
AuthorsFu H, Zou M, Singh NK
Journal TitleApplied Physics Letters
Volume97
Pages262509
Date Published12/27
ISBN Number0003-6951
Accession NumberISI:000285768100054
Keywordsanisotropy, ENTROPY CHANGE, tb, temperature
Abstract

Dy53.8Co17.3Al28.9 bulk metallic glass with a diameter of 3 mm exhibits spin-glass behavior and large coercivity and remanence. Hydrogenation of Dy53.8Co17.3Al28.9 suppresses the magnetic transition temperature and removes coercivity and remanence because of the expansion of average interatomic distance. The advantage of large magnetic entropy changes (17.5 and 9.5 J/kg K for the field changes from 0 to 50, and from 0 to 20 kOe, respectively) without any hysteresis loss makes Dy53.8Co17.3Al28.9 H-170.6 alloy a promising magnetic refrigerant. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3534794]
URL<Go to ISI>://000285768100054
DOI10.1063/1.3534794
Alternate JournalAppl Phys Lett