1. Tuning the magnetic characteristics of epitaxial BiFeO3 films using structural control
- Author
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P. S. Anil Kumar, Anomitra Sil, and Rajeev Ranjan
- Subjects
Materials science ,Condensed matter physics ,Metals and Alloys ,02 engineering and technology ,Surfaces and Interfaces ,Substrate (electronics) ,021001 nanoscience & nanotechnology ,Epitaxy ,01 natural sciences ,Structural transformation ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Magnetic anisotropy ,Lattice constant ,Phase (matter) ,0103 physical sciences ,Materials Chemistry ,Thin film ,010306 general physics ,0210 nano-technology ,Oxygen pressure - Abstract
Epitaxial BiFeO(3)thin films with different thicknesses were grown on SrTiO3(001) substrate. The fllm exhibits a structural transformation from ``R-like'' phase with out-of-plane lattice parameter 4.06 ANGS; to a ``T-like'' phase with out-of-plane lattice parameter 4.65 ANGS; on increasing the thickness from 16 nm to 60 nm. The parasitic gamma Fe(2)O(3)phase was avoided by using slightly higher oxygen pressure during the growth. The ``R-like'' phase is shown to exhibit significant magnetic anisotropy and enhanced saturation magnetization which vanishes with the appearance of the ``T-like'' phase.
- Published
- 2017