Effects of annealing atmosphere on photorefractive BaTiO3

Jenq-Yang Chang; Chih-Ying Huang; Ching-Cherng Sun

doi:10.1117/12.453999

23 January 2002 Effects of annealing atmosphere on photorefractive BaTiO₃

Jenq-Yang Chang, Chih-Ying Huang, Ching-Cherng Sun

Author Affiliations +

Proceedings Volume 4459, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VII, and Optical Data Storage; (2002) https://doi.org/10.1117/12.453999
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

Nominally undoped BaTiO₃ crystals, processed in atmospheres of various oxygen partial pressure at 900 degree(s)C and 1000 degree(s)C, respectively, were fabricated and systematically investigated. The photorefractive properties are sequentially controlled by the factor from dark decay, deep/shallow trap, deep/shallow trap with hole/electron competition to dark conductivity, as the oxygen partial pressure is reduced. The trend is similar for both of the processing temperature, however, the compensation point is shifted about three of oxygen partial pressure. This can be attributed to a higher oxygen vacancy concentration st higher processing temperature.

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Jenq-Yang Chang, Chih-Ying Huang, and Ching-Cherng Sun "Effects of annealing atmosphere on photorefractive BaTiO₃", Proc. SPIE 4459, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VII, and Optical Data Storage, (23 January 2002); https://doi.org/10.1117/12.453999

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