Anisotropic magnetocaloric effect in all-ferromagnetic (La0.7Sr0.3MnO3/SrRuO3) superlattices
S. Thota, Q. Zhang, F. Guillou, U. Luders, N. Barrier, W. Prellier, A., Wahl, P. Padhan
TL;DR
This study investigates the anisotropic magnetocaloric effect in all-ferromagnetic superlattices, demonstrating how magnetic anisotropy influences entropy changes and suggesting potential for magnetic refrigeration technology.
Contribution
It reveals the strong anisotropic magnetocaloric effect in La0.7Sr0.3MnO3/SrRuO3 superlattices and proposes tuning magnetic properties via artificial superlattice design.
Findings
Strong anisotropic magnetocaloric effect observed
Crossover between inverse and conventional entropy changes
Potential for magnetic refrigeration applications
Abstract
We exploit the magnetic interlayer coupling in La0.7Sr0.3MnO3/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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