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Change of photoluminescence property of ferroelectric compounds with the gamma-ray irradiation
- Authors
- Lim, Junhwi; Lee, Y. S.; Yang, Sun A.; Choi, Gi Ppeum; Bu, Sang Don
- Issue Date
- Aug-2017
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- BLT; KNMN; Photoluminescence; Gamma-ray irradiation
- Citation
- JOURNAL OF LUMINESCENCE, v.188, pp.188 - 192
- Journal Title
- JOURNAL OF LUMINESCENCE
- Volume
- 188
- Start Page
- 188
- End Page
- 192
- ISSN
- 0022-2313
- Abstract
- We investigated the emission properties of Bi3.25La0.75Ti3O12 polycrystals and (K0.5Na0.5)(Mn0.005Nb0.995)O-3 thin films with strong gamma (gamma) -ray irradiation by using temperature dependent photoluminescence spectroscopy. At the lowest temperatures, sizable visible emissions were identified for the gamma-ray irradiated samples as well as un-irradiated ones. In both kinds of compounds, the visible emission intensity tended to be increased without changing the spectral shape, as the gamma-ray dose increased. This indicates that the gamma-ray irradiation should increase all kinds of already-existing defects evenly, without preferring the formation of some particular type of defect.
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Related Researcher
- Lee, Yun Sang
- College of Natural Sciences (Department of Physics)