Structural and proton-dynamical effects in a proton-irradiated KH2 PO4 single crystal

S. H. Kim, B. H. Oh, K. W. Lee, Cheol Eui Lee, K. S. Hong

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A KH2 PO4 (KDP) crystal, irradiated by a 1 MeV hydrogen ion beam to a dose of 1015 ions/cm2, was studied by means of x-ray diffraction (XRD), H1 nuclear magnetic resonance (NMR), and dielectric constant measurements. The XRD pattern for the a -cut KDP crystal revealed a decrease in the lattice constant along the a axis after the proton irradiation. According to the H1 NMR spin-lattice relaxation rate measurements, the proton irradiation gave rise to reduction in the activation energy in the paraelectric phase, from 0.42 to 0.28 eV, in agreement with the temperature dependent second moment measurements indicating the proton motion is more activated after the proton irradiation. Besides, analysis of the temperature-dependent dielectric constants using a mean-field approximation revealed a change in the hydrogen bond induced by the proton irradiation.

Original languageEnglish
Article number134114
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume73
Issue number13
DOIs
Publication statusPublished - 2006 May 10

Fingerprint

Proton irradiation
proton irradiation
Protons
Single crystals
protons
single crystals
x ray diffraction
Permittivity
Nuclear magnetic resonance
permittivity
X rays
nuclear magnetic resonance
Crystals
Spin-lattice relaxation
hydrogen ions
spin-lattice relaxation
Diffraction patterns
Ion beams
Lattice constants
crystals

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Structural and proton-dynamical effects in a proton-irradiated KH2 PO4 single crystal. / Kim, S. H.; Oh, B. H.; Lee, K. W.; Lee, Cheol Eui; Hong, K. S.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 73, No. 13, 134114, 10.05.2006.

Research output: Contribution to journalArticle

@article{9a1846fd546543caaaedc739926afbc7,
title = "Structural and proton-dynamical effects in a proton-irradiated KH2 PO4 single crystal",
abstract = "A KH2 PO4 (KDP) crystal, irradiated by a 1 MeV hydrogen ion beam to a dose of 1015 ions/cm2, was studied by means of x-ray diffraction (XRD), H1 nuclear magnetic resonance (NMR), and dielectric constant measurements. The XRD pattern for the a -cut KDP crystal revealed a decrease in the lattice constant along the a axis after the proton irradiation. According to the H1 NMR spin-lattice relaxation rate measurements, the proton irradiation gave rise to reduction in the activation energy in the paraelectric phase, from 0.42 to 0.28 eV, in agreement with the temperature dependent second moment measurements indicating the proton motion is more activated after the proton irradiation. Besides, analysis of the temperature-dependent dielectric constants using a mean-field approximation revealed a change in the hydrogen bond induced by the proton irradiation.",
author = "Kim, {S. H.} and Oh, {B. H.} and Lee, {K. W.} and Lee, {Cheol Eui} and Hong, {K. S.}",
year = "2006",
month = "5",
day = "10",
doi = "10.1103/PhysRevB.73.134114",
language = "English",
volume = "73",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Institute of Physics Publising LLC",
number = "13",

}

TY - JOUR

T1 - Structural and proton-dynamical effects in a proton-irradiated KH2 PO4 single crystal

AU - Kim, S. H.

AU - Oh, B. H.

AU - Lee, K. W.

AU - Lee, Cheol Eui

AU - Hong, K. S.

PY - 2006/5/10

Y1 - 2006/5/10

N2 - A KH2 PO4 (KDP) crystal, irradiated by a 1 MeV hydrogen ion beam to a dose of 1015 ions/cm2, was studied by means of x-ray diffraction (XRD), H1 nuclear magnetic resonance (NMR), and dielectric constant measurements. The XRD pattern for the a -cut KDP crystal revealed a decrease in the lattice constant along the a axis after the proton irradiation. According to the H1 NMR spin-lattice relaxation rate measurements, the proton irradiation gave rise to reduction in the activation energy in the paraelectric phase, from 0.42 to 0.28 eV, in agreement with the temperature dependent second moment measurements indicating the proton motion is more activated after the proton irradiation. Besides, analysis of the temperature-dependent dielectric constants using a mean-field approximation revealed a change in the hydrogen bond induced by the proton irradiation.

AB - A KH2 PO4 (KDP) crystal, irradiated by a 1 MeV hydrogen ion beam to a dose of 1015 ions/cm2, was studied by means of x-ray diffraction (XRD), H1 nuclear magnetic resonance (NMR), and dielectric constant measurements. The XRD pattern for the a -cut KDP crystal revealed a decrease in the lattice constant along the a axis after the proton irradiation. According to the H1 NMR spin-lattice relaxation rate measurements, the proton irradiation gave rise to reduction in the activation energy in the paraelectric phase, from 0.42 to 0.28 eV, in agreement with the temperature dependent second moment measurements indicating the proton motion is more activated after the proton irradiation. Besides, analysis of the temperature-dependent dielectric constants using a mean-field approximation revealed a change in the hydrogen bond induced by the proton irradiation.

UR - http://www.scopus.com/inward/record.url?scp=33646237380&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33646237380&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.73.134114

DO - 10.1103/PhysRevB.73.134114

M3 - Article

VL - 73

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 13

M1 - 134114

ER -