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Article
Preparation, crystal structure, heat capacity, magnetism, and the magnetocaloric effect of Pr5Ni1.9Si3 and PrNi
Physical Review B
  • Alexandra O. Pecharsky, Iowa State University
  • Yurij Mozharivskyj, Iowa State University
  • K.W. Dennis, Iowa State University
  • Karl A. Gschneidner, Jr., Iowa State University
  • R. William McCallum, Iowa State University
  • Gordon J. Miller, Iowa State University
  • Vitalij K. Pecharsky, Iowa State University
Document Type
Article
Publication Version
Published Version
Publication Date
1-1-2003
DOI
10.1103/PhysRevB.68.134452
Abstract
Single-phase Pr5Ni1.9Si3 and PrNi were prepared and characterized by using differential thermal analysis, single crystal, and powder x-ray diffraction. Their thermal and magnetic properties were studied by measuring heat capacity as a function of temperature in magnetic fields up to 100 kOe and magnetization as a function of magnetic field up to 50 kOe over the temperature range from 5 to 400 K. Pr5Ni1.9Si3 orders magnetically at 50 K, and it undergoes a second transition at 25 K. As inferred from the behavior of the magnetization and magnetocaloric effect (MCE), both ferromagnetic and antiferromagnetic components are present in the magnetic ground state of the material. The heat capacity and magnetocaloric effect of PrNi confirm that it orders ferromagnetically at 19 K. Both Pr5Ni1.9Si3 and PrNi exhibit moderate magnetocaloric effects. The maximum MCE for Pr5Ni1.9Si3 is 3.4 K and it is observed at 50 K for a magnetic field change from 0 to 75 kOe. The maximum MCE for PrNi is 4.2 K, which occurs at 19 K for a magnetic field change from 0 to 100 kOe.
Comments

This article is from Physical Review B 68 (2003): 1, doi:10.1103/PhysRevB.68.134452. Posted with permission.

Copyright Owner
American Physical Society
Language
en
File Format
application/pdf
Citation Information
Alexandra O. Pecharsky, Yurij Mozharivskyj, K.W. Dennis, Karl A. Gschneidner, et al.. "Preparation, crystal structure, heat capacity, magnetism, and the magnetocaloric effect of Pr5Ni1.9Si3 and PrNi" Physical Review B Vol. 68 Iss. 134452 (2003) p. 1 - 8
Available at: http://works.bepress.com/gordon-miller/80/