Magnetic and magnetocaloric properties of bulk dysprosium chromite

Journal Article · Sat Sep 21 00:00:00 EDT 2013 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4821016· OSTI ID:22218006

McDannald, A. ^[1]; Kuna, L. ^[2]; Jain, M. ^[3]

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1. Material Science and Engineering, University of Connecticut, Storrs, Connecticut 06269 (United States)
2. Department of Physics, University of Connecticut, Storrs, Connecticut 06269 (United States)
3. Institute of Material Science, University of Connecticut, Storrs, Connecticut 06269 (United States)

In this work, a polycrystalline bulk DyCrO{sub 3} sample was prepared by a solution route and the structural and magnetic properties were investigated. The phase purity and ionic valence state of the DyCrO{sub 3} sample were determined by x-ray diffraction/Raman spectroscopy and x-ray photoelectron spectroscopy, respectively. The AC and DC magnetization measurements revealed the onset of antiferromagnetic order at 146 K with an effective moment of 8.88 μ{sub B}. Isothermal magnetization measurements of this material are presented for the first time, showing a peak in the coercive field at 80 K that is explained by the competition between the paramagnetic Dy{sup 3+} and Cr{sup 3+} sublattices. DyCrO{sub 3} was found to display a large magnetocaloric effect (8.4 J/kg K) and relative cooling power (217 J/kg) at 4 T applied field, which renders DyCrO{sub 3} useful for magnetic refrigeration between 5 K and 30 K.

• OSTI ID: 22218006
• Journal Information: Journal of Applied Physics, Vol. 114, Issue 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADIABATIC DEMAGNETIZATION
ANTIFERROMAGNETIC MATERIALS
ANTIFERROMAGNETISM
CHROMIUM IONS
COERCIVE FORCE
DYSPROSIUM
DYSPROSIUM COMPOUNDS
DYSPROSIUM IONS
MAGNETIC PROPERTIES
MAGNETIZATION
PARAMAGNETISM
POLYCRYSTALS
RAMAN SPECTRA
RAMAN SPECTROSCOPY
REFRIGERATION
THERMODYNAMIC PROPERTIES
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY