Stoichiometric Fe3O4 films have been epitaxially formed on both α-Al2O3 and MgO single-crystalline substrates by a reactive vapor deposition method. Their crystalline qualities were examined by various methods including conversion electron Mössbauer spectroscopy (CEMS). A large lattice mismatch of Fe3O4 with the α-Al2O3 substrate resulted in a granular particle growth. But with Fe3O4/MgO, where the mismatch was only 0.3%, the structural and magnetic properties were found to be very sensitive to an excellent interfacial lattice matching.
ASJC Scopus subject areas
- Condensed Matter Physics