4.6 Article

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

Journal

APPLIED PHYSICS LETTERS
Volume 97, Issue 11, Pages -

Publisher

AMER INST PHYSICS
DOI: 10.1063/1.3488828

Keywords

entropy; ferromagnetic materials; lanthanum compounds; magnetic anisotropy; magnetic multilayers; magnetic structure; magnetocaloric effects; strontium compounds

Funding

  1. CEFIPRA/IFPCAR [3908-1]
  2. C'Nano Nord Ouest [2975]
  3. STAR [21465YL]
  4. ENERMAT [2009-1/086]
  5. CNRS
  6. SOPRANO [PITN-GA-2008-214040]

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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. (c) 2010 American Institute of Physics. [doi:10.1063/1.3488828]

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