Pulsed laser deposition films from a Ba₂FeMoO₆ target onto SrTiO₃[001]: Chemical and magnetic inhomogeneity.

ABSTRACT: Pulsed laser deposition films from Ba₂FeMoO₆ (BFMO) targets onto SrTiO₃[001] (STO) substrates have been reported previously to have non-zero magnetism at 300 K, a majority of magnetic ordering at 240 K that is less than the 370 K ordering temperature of polycrystalline BFMO, and suppressed saturation magnetization compared to polycrystalline BFMO. To interrogate these previously reported observations of BFMO on STO, we have used a combination of x-ray diffraction, atomic force microscopy, x-ray and neutron reflectivity, and x-ray photoelectron spectroscopy that shows inhomogeneities. The present results show off-stoichiometry on the A-site by incorporation of Sr from the substrate and on the B-site to have %Fe/%Mo > 1 by evolution of BaMoO₄. Ther

SUBMITTER: Pajerowski DM 

PROVIDER: S-EPMC11194730 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature