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

Journal Article · · Journal of Magnetism and Magnetic Materials
 [1];  [2];  [2];  [2];  [3];  [2]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States); Univ. of Science and Technology of Beijing (People's Republic of China)
  2. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  3. Univ. of Science and Technology of Beijing (People's Republic of China)
+ Show Author Affiliations
In this study, the magnetic properties and magnetic entropy changes of DyCo2Bx (x=0, 0.05, 0.1, and 0.2) alloys were investigated. The Curie temperature (TC) 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.
Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1245627
Alternate ID(s):
OSTI ID: 22588423
OSTI ID: 1396777
Report Number(s):
IS-J--8939; PII: S0304885315309252
Journal Information:
Journal of Magnetism and Magnetic Materials, Journal Name: Journal of Magnetism and Magnetic Materials Journal Issue: C Vol. 405; ISSN 0304-8853
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
magnetic entropy changes
magnetic properties
magnetic transition nature
magnetic viscosity
magnetocaloric effect