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Journal of Nanomaterials
Volume 2012, Article ID 123438, 7 pages
http://dx.doi.org/10.1155/2012/123438
Research Article

Electronic Structure of BiFe1−xMnxO3 Thin Films Investigated by X-Ray Absorption Spectroscopy

1Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, CAS, Beijing 100049, China
2School of Physical Science and Technology, Xinjiang University, Urumqi 830046, China

Received 7 March 2012; Accepted 21 April 2012

Academic Editor: Weichang Hao

Copyright © 2012 Abduleziz Ablat et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Multiferroic polycrystalline BiFe1-xMnxO3 ( 0 𝑥 0 . 3 ) thin films have been prepared on the Pt(111)/Ti/SiO2/Si(100) substrates by pulsed laser deposition method. The influence of Mn substitution on the electronic structure and magnetic properties has been studied. X-ray diffraction spectroscopy shows that Mn substitution slightly modulates crystal structure of the BiFe1-xMnxO3 system within the same structural phase. According to Fe L edge X ray absorption spectroscopy, Fe ions are found to be formally trivalent for doping amount x in BiFe1-xMnxO3. The enhanced magnetization by increasing Mn content is attributed to an alternation degree of hybridization between Fe 3d-O 2p and Mn 3d-O 2p orbitals, basing on the carefully examined Fe L and O K edge X-ray absorption spectroscopy. The crystal structural and the electronic structural results show a causal relation between them by demonstrating intrinsic mutual dependence between respective variations.