1H NMR spin-spin relaxation in TlH2PO4 undergoing separated antiferroelectric and ferroelastic phase transitions

Se Hun Kim, Kyu Won Lee, J. H. Han, Cheol Eui Lee

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We have investigated hydrogen-bonded TlH2PO4 (TDP), undergoing separated antiferroelectric and ferroelastic phase transitions, by means of 1H nuclear magnetic resonance (NMR) spin-spin relaxation, which gave two distinct decay constants attributed to the lattice diffusion and dynamically disordered hydrogen bonds. A frustrated proton dynamics of the H-bond defects, with an increased activation energy, was identified in association with the ferroelastic phase transition in the system, throwing new light onto the microscopic nature of the phase transitions in the KH2PO4 (KDP)-type crystals.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalSolid State Communications
Volume144
Issue number1-2
DOIs
Publication statusPublished - 2007 Oct

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (User Program of Proton Engineering Frontier Program as a part of the 21C Frontier R&D Program and RO1-2005-000-10798-0 and R01-2007-000-11813-0) and by the Korea Research Foundation (Grant No. KRF-2004-005-C00060 and the Second Brain Korea 21 Project). This work was also supported by the Seoul Research and Business Development Program (Grant No. 10583). The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

Keywords

  • A. Ferroelectrics
  • E. Nuclear resonance

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry

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