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

doi:10.1103/PhysRevB.80.172101

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

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 language	English
Article number	172101
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.80.172101
Publication status	Published - 2009 Nov 3

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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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.",

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N2 - 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.

AB - 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.

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

Abstract

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