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P-31 nuclear magnetic resonance study of the proton-irradiated KTiOPO4
- Authors
- Kim, Se-Hun; Lee, Cheol Eui
- Issue Date
- Aug-2013
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- KTiOPO4; Proton-irradiation effect; High-resolution P-31 nuclear magnetic resonance
- Citation
- SOLID STATE COMMUNICATIONS, v.168, pp.28 - 30
- Indexed
- SCIE
SCOPUS
- Journal Title
- SOLID STATE COMMUNICATIONS
- Volume
- 168
- Start Page
- 28
- End Page
- 30
- ISSN
- 0038-1098
- Abstract
- P-31 nuclear magnetic resonance (NMR) was employed to study the effects of proton irradiation on KTiOPO4 (KTP) in view of the previously studied paramagnetic impurity doping effects. High-resolution P-31 NMR measurements showed significant increase in the isotropic chemical shifts of the two inequivalent phosphorus sites in the proton-irradiated KTP system, indicating decrease in the electron density around the phosphorous nuclei. The P-31 NMR linewidths of the ICTP system manifested anomalies associated with the superionic transition and with the polaron formation, which became much weaker after proton irradiation. Besides, the activation energy of the charge carriers increased significantly after proton irradiation. (C) 2013 Elsevier Ltd. All rights reserved.
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