Proton-irradiation-induced anomaly in the electrical conductivity of a hydrogen-bonded ferroelastic system

Se Hun Kim, Kyu Won Lee, Kwang Sei Lee, Cheol Eui Lee

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Abstract

An anomalous abrupt drop in the electrical conductivity has been observed at the ferroelastic phase transition of a proton-irradiated system of hydrogen-bonded TlH2 PO4. As a result of the high-resolution P 31 NMR chemical-shift measurements, distinct changes in the atomic displacements due to the irradiation were identified in the ferroelastic and paraelastic phases. Besides, H1 NMR spin-spin relaxation measurements revealed a change due to the irradiation in the proton dynamics at the ferroelastic phase transition, apparently accounting for the much-reduced electrical conductivity in the paraelastic phase of the irradiated system.

Original languageEnglish
Article number172101
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number17
DOIs
Publication statusPublished - 2009 Nov 3

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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