High Curie temperature in B-site ordered Sr2CrWO6 epitaxial thin films

A. Venimadhav, Falak Sher, J. P. Attfield, M. G. Blamaire, Paul Attfield

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Abstract

Epitaxial and c-axis oriented double perovskite Sr2CrWO6 thin films were prepared on SrTiO3 (100) and LaAlO3 (100) substrates by pulsed-laser deposition. Structural, magnetic and transport properties were found to be sensitive to the gas conditions employed during the deposition. A small amount of oxygen along with Ar during the deposition was found to be essential for B-site ordering; such films displayed lattice parameters close to the bulk value and display ferromagnetic metallic behavior. The Curie temperature observed above 500 K in these films is higher than bulk Sr2CrWO6 samples. Films grown without oxygen were observed to have long c-parameter and no B-site ordering; they were non-magnetic and semiconducting. (c) 2006 Published by Elsevier Ltd.

Original languageEnglish
Pages (from-to)314-317
Number of pages4
JournalSolid state communications
Volume138
Issue number6
DOIs
Publication statusPublished - 2006

Keywords

  • thin films
  • double perovskites
  • ordering
  • ferromagnetism
  • DOUBLE-PEROVSKITE
  • SR2FEMOO6
  • MAGNETORESISTANCE
  • DEPOSITION
  • SR2CRREO6
  • TRANSPORT
  • GROWTH

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