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Giant low-field magnetocaloric effect in EuTi1 − x Nb x O3 (x = 0.05, 0.1, 0.15, and 0.2) compounds.
- Source :
- Chinese Physics B; Feb2020, Vol. 29 Issue 3, p1-1, 1p
- Publication Year :
- 2020
-
Abstract
- The magnetic properties and magnetocaloric effect (MCE) of EuTi<subscript>1 − x</subscript>Nb<subscript>x</subscript>O<subscript>3</subscript> (x = 0.05, 0.1, 0.15, and 0.2) compounds are investigated. Owing to electronic doping, parts of Ti ions are replaced by Nb ions, the lattice constant increases and a small number of Ti<superscript>4+</superscript> (3d<superscript>0</superscript>) ions change into Ti<superscript>3+</superscript> (3d<superscript>1</superscript>). It is the ferromagnetism state that is dominant in the derivative balance. The values of the maximum magnetic entropy change () are 10.3 J/kg · K, 9.6 J/kg · K, 13.1 J/kg · K, and 11.9 J/kg · K for EuTi<subscript>1 − x</subscript>Nb<subscript>x</subscript>O<subscript>3</subscript> (x = 0.05, 0.1, 0.15, and 0.2) compounds and the values of refrigeration capacity are 36, 33, 86, and 80 J/kg as magnetic field changes in a range of 0 T–1 T. The EuTi<subscript>1 − x</subscript>Nb<subscript>x</subscript>O<subscript>3</subscript> (x = 0.05, 0.1, 0.15, and 0.2) compounds with giant reversible MCE are considered as a good candidate for magnetic refrigerant working at low-temperature and low-field. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16741056
- Volume :
- 29
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Chinese Physics B
- Publication Type :
- Academic Journal
- Accession number :
- 142483796
- Full Text :
- https://doi.org/10.1088/1674-1056/ab69e7