35Cl NQR Study of Phase Soliton Formation and Residual Commensurations in K2ZnCl4

Dong Keun Oh, Cheol Eui Lee, S. Y. Jeong

Research output: Contribution to journalArticlepeer-review

Abstract

In order to investigate the dynamics of the ZnCl4 tetrahedra in K2ZnCl4,35Cl nuclear quadrupole resonance was employed for the spin-lattice relaxation measurements of each of the triplicated Cl sites in the lock-in phase. The temperature dependence of the spin-lattice relaxation rate (1/T1Q) indicates that the domain peak observed in the incommensurate phase arises from the ZnCl4 tetrahedral site with a negligible reorientational motion. On the other hand, an activated reorientational motion of the other two ZnCl4 tetrahedral sites appears to lead to the phase solitons. Molecular motions in Rb2ZnCl4 and in Cs2ZnCl4, undergoing an incommensurate an not incommensurate phase transition, respectively, were also compared.

Original languageEnglish
Pages (from-to)363-368
Number of pages6
JournalZeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume57
Issue number6-7
DOIs
Publication statusPublished - 2002 Jul

Keywords

  • Cl NQR
  • KZnCl
  • Phase Soliton Formation
  • Residual Commensurations

ASJC Scopus subject areas

  • Mathematical Physics
  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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