Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102750
Title: Structural, magnetic, magnetocaloric and specific heat investigations on Mn doped PrCrO3 orthochromites
Authors: Kumar, S.
Coondoo, I.
Vasundhara, M.
Kumar, S.
Kholkin, A. L.
Panwar, N.
Issue Date: 2017
Publisher: Institute of Physics Publishing
Citation: Structural, magnetic, magnetocaloric and specific heat investigations on Mn doped PrCrO3 orthochromites / S. Kumar, I. Coondoo, M. Vasundhara, et al. — DOI 10.1088/1361-648X/aa666c // Journal of Physics Condensed Matter. — 2017. — Vol. 29. — Iss. 19. — 195802.
Abstract: We have synthesized PrCr0.85Mn0.15O3 (PCMO) chromite and investigated the influence of manganese (Mn) doping at Cr-sites on the structural, magnetic, magnetocaloric and thermal properties of PrCrO3 compound. No structural transition was observed with Mn substitution and the doped compound crystallized into distorted orthorhombic structure with Pnma space group which was confirmed by Rietveld refinement of x-ray powder diffraction patterns. Neel temperature, noticed at 168 K from the temperature variation of magnetization, smaller than that reported for PrCrO3, indicated the influence of Mn3+ substitution in decreasing the antiferromagnetic ordering. Magnetization was almost eight times higher than that reported for undoped sample. Magnetocaloric effect measured via the magnetic entropy change and relative cooling power demonstrated significant values in the temperature range 10-20 K. The values of magnetic entropy change are much superior to that reported for other polycrystalline orthochromites and even at smaller applied field strength. The material exhibited second order magnetic phase transition. The Debye temperature and the density of states at Fermi level were also calculated. The overall results make PrCr0.85Mn0.15O3 chromite a potential candidate to replace the existing materials for low temperature magnetic refrigeration. © 2017 IOP Publishing Ltd.
Keywords: MAGNETIC REFRIGERATION
ORTHOCHROMITES
SPECIFIC HEAT
ANTIFERROMAGNETISM
CHROMIUM COMPOUNDS
ENTROPY
MAGNETIZATION
MAGNETOCALORIC EFFECTS
MANGANESE COMPOUNDS
PRASEODYMIUM COMPOUNDS
REFRIGERATION
RIETVELD REFINEMENT
SPECIFIC HEAT
TEMPERATURE
X RAY POWDER DIFFRACTION
ANTIFERROMAGNETIC ORDERINGS
MAGNETIC ENTROPY CHANGE
MAGNETIC PHASE TRANSITIONS
ORTHOCHROMITES
ORTHORHOMBIC STRUCTURES
RELATIVE COOLING POWER
STRUCTURAL TRANSITIONS
TEMPERATURE VARIATION
MAGNETIC REFRIGERATION
URI: http://hdl.handle.net/10995/102750
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85017526755
PURE ID: 1760403
ISSN: 9538984
DOI: 10.1088/1361-648X/aa666c
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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