Giant magnetocaloric effect in magnetoelectric Eu1-xBa xTiO3

Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.4862981

Title:	Giant magnetocaloric effect in magnetoelectric Eu1-xBa xTiO3
Authors:	Rubi, K. Kumar, P. Maheswar Repaka, D.V. Chen, R. Wang, J.-S. Mahendiran, R.
Issue Date:	20-Jan-2014
Citation:	Rubi, K., Kumar, P., Maheswar Repaka, D.V., Chen, R., Wang, J.-S., Mahendiran, R. (2014-01-20). Giant magnetocaloric effect in magnetoelectric Eu1-xBa xTiO3. Applied Physics Letters 104 (3) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4862981
Abstract:	We report the magnetic entropy change (ΔSm) in magnetoelectric Eu1-xBaxTiO3 for 0.1 ≤ x ≤ 0.9. We find -ΔSm = 11 (40) J/kg·K in x = 0.1 for a field change of 1 (5) T, respectively, which is the largest value among all Eu-based oxides. ΔSm arises from the field-induced suppression of the spin entropy of Eu2+:4f7 localized moments. While \|-ΔSm\| decreases with increasing x, \|-ΔSm\| = 6.58 J/kg·K observed in the high spin diluted composition x = 0.9 is larger than that in many manganites. Our results indicate that these magnetoelectrics are potential candidates for cryogenic magnetic refrigeration. © 2014 AIP Publishing LLC.
Source Title:	Applied Physics Letters
URI:	http://scholarbank.nus.edu.sg/handle/10635/96726
ISSN:	00036951
DOI:	10.1063/1.4862981
Appears in Collections:	Staff Publications

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