Nmr Study Of Thiourea

Cheol E. Lee, C. H. Lee, J. G. Yoon

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We have investigated the local environments and the lattice dynamics of polycrystalline samples of pure thiourea (SC(NH2)2) and urea (OC(NH2>2)-doped thiourea using the techniques of 1H pulsed NMR. In the NMR frequency range of our investigation the room temperature spin-lattice relaxation rate (1/Ti) varies very sensitively following the form predicted from the theory of the spectral density. This frequency dependence allowed us to calculate the correlation times of molecular reorientation in the pure and urea-doped thiourea lattices. The lineshapes showed the different environments of the protons in the two systems. We have also observed the effect of the 14N quadrupole-1H Zeeman level cross relaxation by directly taking NMR data at the magnetic field of the level crossing in thiourea.

Original languageEnglish
Pages (from-to)315-320
Number of pages6
JournalFerroelectrics
Volume156
Issue number1
DOIs
Publication statusPublished - 1994 Jun

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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