A study of the phase transition and magnetocaloric effect in multiferroic La{sub 2}MnNiO{sub 6} single crystals
- Regroupement québécois sur les matériaux de pointe, Département de physique, Université de Sherbrooke, Quebec J1K 2R1 (Canada)
- Institute of Solid State Physics, Bulgarian Academy of Science, Sofia 1184 (Bulgaria)
Magnetic and magnetocaloric properties of single crystal double perovskite La{sub 2}MnNiO{sub 6} have been investigated in details. Its ordered phase with a high Curie temperature (T{sub C} = 280 K) exhibits a significant refrigerant capacity around room temperature. A model based on the mean field theory approximation has been used in order to quantify the magnetic and magnetocaloric properties in the ordered La{sub 2}MnNiO{sub 6}. The magnetization and entropy changes were satisfactorily simulated as a function of temperature and magnetic field. On the other hand, the presence of cationic disorder in La{sub 2}MnNiO{sub 6} phases allows to shift the Curie point to low temperature without a significant change in the magnetocaloric performance.
- OSTI ID:
- 22273473
- Journal Information:
- Journal of Applied Physics, Vol. 115, Issue 17; 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
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
APPROXIMATIONS
CAPACITY
COMPUTERIZED SIMULATION
CURIE POINT
ENTROPY
LANTHANUM COMPOUNDS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIZATION
MANGANESE COMPOUNDS
MEAN-FIELD THEORY
MONOCRYSTALS
NICKELATES
PHASE TRANSFORMATIONS
TEMPERATURE DEPENDENCE