Lattice distortion of holmium doped bismuth ferrite nanofilms

云麒¹，白阿立玛¹，赵世峰^1,2

1. School of Physical Science and Technology, Inner Mongolia University2. Inner Mongolia Key Lab of Nanoscience and Nanotechnology, Inner Mongolia University

摘 要：Single-phase multiferroic BiFeO3 and rare-earth metal of holmium（Ho） doped BiFeO3 nanofilms were prepared on Pt（100）/Ti/SiO2/Si wafer via solution-gelation technique. It was suggested that the lattice distortion happened with the lattice parameter of d decreasing after doping rare-earth metal of Ho. Meanwhile, the structure of nanofilms transformed from hexahedron phase to tetragonal phase after doping Ho. The analysis on X-ray photoelectron spectroscopy（XPS） indicated that the ratio of Fe3+ cations to Fe2+ cations increased with the increase of binding energy between Fe and O and decrease of that between Bi and O after doping Ho. The present work provided an available way on enhancing multiferroic of BiFeO3 nanofilms.

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