Ferromagnetic Heusler Co2FeAl0.5Si0.5 epitaxial thin-films have been fabricated in the L21 structure with saturation magnetizations over 1200 emu/cm3. Andreev reflection measurements show that the spin polarization is as high as 80% in samples sputtered on unheated MgO (100) substrates and annealed at high temperatures. However, the spin polarization is considerably smaller in samples deposited on heated substrates.

Original languageEnglish (US)
Article number046108
JournalAPL Materials
Issue number4
StatePublished - Apr 2014

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)


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