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Published in:
01-06-2012
Effect of Cr doping on the structure, optical and magnetic properties of multiferroic BiFeO3 thin films
Published in: Journal of Materials Science: Materials in Electronics | Issue 6/2012
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Abstract
Multiferroic BiCr
x
Fe1−x
O3 (BCFO) (0 ≤ x ≤ 0.12) thin films were fabricated on silicon substrates by sol–gel technique. The microstructure and properties of the films are characterized using X-ray diffraction, spectroscopic ellipsometry, micro-Raman spectrometry and a Modular Control system. The BCFO films are the rhombohedral structure with the Cr content up to 7%. Raman scattering spectra of the BCFO films demonstrate the transformation of structure with the Cr content exceeding 10%. The band gap of the BCFO films is from 2.53 to 2.82 eV with the Cr content being from 0 to 12%. The magnetization of the BCFO films is significantly enhanced with the increasing of the Cr content.