Epitaxial growth of electron doped double perovskites LaxA 2-xCrWO6 with A = Sr and Ca

P. Majewski, S. Geprägs, A. Boger, M. Opel, L. Alff, R. Gross

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Ferrimagnetic double perovskites are interesting for tunnel magnetoresistance (TMR) devices due to their high Curie-temperature and their half-metallicity. Because of the preferential formation of LaCrO3, the synthesis of bulk samples of electron-doped LaxSr2-xCrWO6 is difficult. However, due to the non-equilibrium growth conditions during pulsed laser deposition (PLD), the material can be grown as high-quality epitaxial film. We report the growth parameters of the compound LaxSr2-xCrWO6 on SrTiO3 substrates. Using reflection high-energy electron diffraction (RHEED) a layer-by-layer growth over the whole film thickness has been observed. Ca2CrWO 6 grown on NdGaO3 has worse crystalline quality and shows paramagnetic behavior.

Original languageEnglish
Pages (from-to)1154-1157
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume290-291 PART 2
DOIs
StatePublished - Apr 2005
Externally publishedYes

Keywords

  • Doping effects
  • Thin films - epitaxial

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