31P nuclear magnetic resonance study of the proton-irradiated KTiOPO4

Se Hun Kim, Cheol Eui Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

31P 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 31P 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 31P NMR linewidths of the KTP 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.

Original languageEnglish
Pages (from-to)28-30
Number of pages3
JournalSolid State Communications
Volume168
DOIs
Publication statusPublished - 2013

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (Cyclotron Users Program 2013035879 , 2010-0006938 , 2011-0005375 , and 2011-0003797 ). The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

Keywords

  • D. Proton-irradiation effect
  • Resonance

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry

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