Charge distribution of O-H ⋯ o bonds in proton-irradiated KH 2PO4 ferroelectrics

Doug Young Han, J. H. Han, Cheol Eui Lee, S. A. Chae, Se Hun Kim

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The mechanism of charge distribution has been probed by measuring the 1H chemical shift on a proton-irradiated KH2PO4 (KDP) single crystal. For high-resolution 1H chemical shift measurements, the CRAMPS (combined rotation and multiple pulse sequence) technique is utilized. The proton irradiation caused an increase in 1H chemical shift that can be interpreted as an electronic charge transfer from the proton to an oxygen atom, accompanied by a displacement of the proton along the hydrogen bond. The calculated Morse potentials can be explained by using evidence of electronic instabilities related to the proton displacive features.

Original languageEnglish
Pages (from-to)425-428
Number of pages4
JournalJournal of the Korean Physical Society
Issue number12
Publication statusPublished - 2010 Jan 15


  • Hydrogen-bonded ferroelectrics
  • Kh po
  • Nuclear magnetic resonance
  • Proton-beam irradiation

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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