Optical property of the co-doped La and Mg BiFeO3 films fabricated by sol-gel method

Lin Peng; Hongmei Deng; Jianjun Tian; Huan Deng; Pingxiong Yang; Junhao Chu

doi:10.1117/12.916848

22 February 2012 Optical property of the co-doped La and Mg BiFeO₃ films fabricated by sol-gel method

Lin Peng, Hongmei Deng, Jianjun Tian, Huan Deng, Pingxiong Yang, Junhao Chu

Proceedings Volume 8333, Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Devices and Integration; 83331E (2012) https://doi.org/10.1117/12.916848
Event: Photonics and Optoelectronics Meetings 2011, 2011, Wuhan, China

Abstract

The Bi_1-xLa_xFe_1-yMg_yO₃ thin films were fabricated on Si (100) by sol-gel method. X-ray diffraction analysis shows that all the films are perovskite structure with space group R_3C with x and y range from 0 to 0.1 altogether. Moreover, the co-doped La and Mg distorted BiFeO₃ lattice structure which induced from Raman study. The refractive index n and extinction coefficient k of the co-doped BiFeO₃ film obviously get larger with the La and Mg concentration, and the band-gap energy of BiFeO₃ was found to be 2.45±0.02ev and that of Bi _0.95La _0.05Fe _0.95 Mg _0.05 O₃ and Bi _0.9La _0.1 Fe _0.9 Mg _0.1 O₃ were 2.40±0.02ev and 2.35±0.02ev, respectively. Our results suggest that small amount of La and Mg doping can change optical property of BiFeO₃ material.

Citation Download Citation

Lin Peng, Hongmei Deng, Jianjun Tian, Huan Deng, Pingxiong Yang, and Junhao Chu "Optical property of the co-doped La and Mg BiFeO₃ films fabricated by sol-gel method", Proc. SPIE 8333, Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Devices and Integration, 83331E (22 February 2012); https://doi.org/10.1117/12.916848

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