Anisotropic magnetocaloric effect in all-ferromagnetic (La0.7 Sr0.3 MnO3/SrRuO3) superlattices

S. Thota; Q. Zhang; F. Guillou; U. Lüders; N. Barrier; W. Prellier; A. Wahl; P. Padhan

doi:10.1063/1.3488828

Anisotropic magnetocaloric effect in all-ferromagnetic (La_0.7 Sr0.₃ MnO₃/SrRuO₃) superlattices

S. Thota, Q. Zhang, F. Guillou, U. Lüders, N. Barrier, W. Prellier, A. Wahl, P. Padhan

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

We exploit the magnetic interlayer coupling in La_0.7 Sr0. ₃ MnO₃/SrRuO₃ superlattices to realize a crossover between inverse and conventional magnetic entropy changes. Our data reveal a strong anisotropic nature of the magnetocaloric effect due to the magnetic anisotropy of the superlattice. Therefore, artificial superlattices built from ferromagnetic materials that can be used to alter the magnetic structure as well as the magnetic anisotropy, could also be utilized for tuning the magnetocaloric properties, which may open a constructive approach for magnetic refrigeration applications.

Original language	English
Article number	112506
Journal	Applied Physics Letters
Volume	97
Issue number	11
DOIs	https://doi.org/10.1063/1.3488828
State	Published - Sep 13 2010
Externally published	Yes

Funding

This work is done in the frame of the LAFICS. Support of the CEFIPRA/IFPCAR (Project No. 3908-1), the C’Nano Nord Ouest (GDR Grant No. 2975) and STAR (Grant No. 21465YL), ENERMAT (Grant No. 2009-1/086), CNRS Energy Program (Research Project “Froid Magnetique”), and SOPRANO (Grant No. PITN-GA-2008-214040) projects are acknowledged. We also thank J. Lecourt, L. Gouleuf, V. Hardy, and C. Mcloughlin.

Funders	Funder number
C’Nano Nord Ouest
ENERMAT	2009-1/086
GDR	2975
IFPCAR	3908-1
SOPRANO	PITN-GA-2008-214040
STAR	21465YL
Indo-French Centre for the Promotion of Advanced Research
Centre National de la Recherche Scientifique

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AU - Thota, S.

AU - Zhang, Q.

AU - Guillou, F.

AU - Lüders, U.

AU - Barrier, N.

AU - Prellier, W.

AU - Wahl, A.

AU - Padhan, P.

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AB - We exploit the magnetic interlayer coupling in La0.7 Sr0. 3 MnO3/SrRuO3 superlattices to realize a crossover between inverse and conventional magnetic entropy changes. Our data reveal a strong anisotropic nature of the magnetocaloric effect due to the magnetic anisotropy of the superlattice. Therefore, artificial superlattices built from ferromagnetic materials that can be used to alter the magnetic structure as well as the magnetic anisotropy, could also be utilized for tuning the magnetocaloric properties, which may open a constructive approach for magnetic refrigeration applications.

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Anisotropic magnetocaloric effect in all-ferromagnetic (La_0.7 Sr0.₃ MnO₃/SrRuO₃) superlattices

Abstract

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