3d-4f spin interaction and field-induced metamagnetism in RCrO{sub 4} (R = Ho, Gd, Lu) compounds

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4861680· OSTI ID:22273903

Midya, A.; Khan, N.; Bhoi, D.

We observe that the zircon-type RCrO{sub 4} (R = Ho, Gd, Lu) compounds exhibit complicated magnetic properties and large magnetic entropy change due to the strong competition between ferromagnetic and antiferromagnetic interactions. For a field change of 7 T, the maximum values of entropy change and refrigerant capacity reach 28 J kg{sup −1} K{sup −1} and 740 J kg{sup −1}, respectively, for GdCrO{sub 4} whereas the corresponding values for HoCrO{sub 4} are 29 J kg{sup −1} K{sup −1} and 550 J kg{sup −1}. For GdCrO{sub 4} compound, the magnetic entropy change is quite large even at low temperatures well below the ferromagnetic transition.

• OSTI ID: 22273903
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETIC MATERIALS
ANTIFERROMAGNETISM
CHROMATES
ENTROPY
FERROMAGNETIC MATERIALS
FERROMAGNETISM
GADOLINIUM COMPOUNDS
HOLMIUM COMPOUNDS
LUTETIUM COMPOUNDS
MAGNETIC PROPERTIES
PHASE TRANSFORMATIONS
SPIN
TEMPERATURE DEPENDENCE