Journal
CHINESE PHYSICS B
Volume 24, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/24/3/037501
Keywords
magnetocaloric effect; rotating field entropy change; magnetocrystalline anisotropy; DyFeO3 single crystal
Categories
Funding
- National Basic Research Program of China [2010CB934202, 2011CB921801, 2012CB933102]
- National Natural Science Foundation of China [11174351, 11274360, 11034004]
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We have investigated the anisotropic magnetocaloric effect and the rotating field magnetic entropy in DyFeO3 single crystal. A giant rotating field entropy change of -Delta S-M(R) = 16.62 J/kg.K was achieved from b axis to c axis in bc plane at 5 K for a low field change of 20 kOe. The large anisotropic magnetic entropy change is mainly accounted for the 4f electron of rare-earth Dy3+ ion. The large value of rotating field entropy change, together with large refrigeration capacity and negligible hysteresis, suggests that the multiferroic ferrite DyFeO3 singlecrystal could be a potential material for anisotropic magnetic refrigeration at low field, which can be realized in the practical application around liquid helium temperature region.
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