Ferroelectric domain freezing and charge conduction in proton-irradiated K(H0.36D0.64)2PO4

Se Hun Kim, B. H. Oh, Cheol Eui Lee

Research output: Contribution to journalArticle

Abstract

We have studied the effects of proton irradiation in K(H0.36D0.64)2PO4 single crystals by employing impedance spectroscopy. Frequency-dependent dielectric loss measurements allowed us to investigate changes in the domain wall dynamics of a proton-irradiated crystal with a ferroelectric phase transition temperature raised by 5 K. Thus, the increase caused by proton irradiation in the activation energy of the domain freezing in the direction of the hydrogen bonds was found to be significantly greater than in the case of KH2PO4. Furthermore, the temperature dependence of the power-law exponent n in the frequency-dependent electrical conductivity in the proton-conducting systems manifested changes arising from the proton irradiation in the interactions between the mobile ionic (proton) charges and their environments.

Original languageEnglish
Pages (from-to)547-550
Number of pages4
JournalJournal of the Korean Physical Society
Volume69
Issue number4
DOIs
Publication statusPublished - 2016 Aug 1

Fingerprint

proton irradiation
freezing
conduction
protons
dielectric loss
domain wall
transition temperature
exponents
impedance
hydrogen bonds
activation energy
temperature dependence
electrical resistivity
single crystals
spectroscopy
crystals
interactions

Keywords

  • Electrical conduction
  • Ferroelectric domain freezing
  • K(HD)PO
  • Proton irradiation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Ferroelectric domain freezing and charge conduction in proton-irradiated K(H0.36D0.64)2PO4 . / Kim, Se Hun; Oh, B. H.; Lee, Cheol Eui.

In: Journal of the Korean Physical Society, Vol. 69, No. 4, 01.08.2016, p. 547-550.

Research output: Contribution to journalArticle

@article{7b1191026c49490bb4d9cf26d6a1efca,
title = "Ferroelectric domain freezing and charge conduction in proton-irradiated K(H0.36D0.64)2PO4",
abstract = "We have studied the effects of proton irradiation in K(H0.36D0.64)2PO4 single crystals by employing impedance spectroscopy. Frequency-dependent dielectric loss measurements allowed us to investigate changes in the domain wall dynamics of a proton-irradiated crystal with a ferroelectric phase transition temperature raised by 5 K. Thus, the increase caused by proton irradiation in the activation energy of the domain freezing in the direction of the hydrogen bonds was found to be significantly greater than in the case of KH2PO4. Furthermore, the temperature dependence of the power-law exponent n in the frequency-dependent electrical conductivity in the proton-conducting systems manifested changes arising from the proton irradiation in the interactions between the mobile ionic (proton) charges and their environments.",
keywords = "Electrical conduction, Ferroelectric domain freezing, K(HD)PO, Proton irradiation",
author = "Kim, {Se Hun} and Oh, {B. H.} and Lee, {Cheol Eui}",
year = "2016",
month = "8",
day = "1",
doi = "10.3938/jkps.69.547",
language = "English",
volume = "69",
pages = "547--550",
journal = "Journal of the Korean Physical Society",
issn = "0374-4884",
publisher = "Korean Physical Society",
number = "4",

}

TY - JOUR

T1 - Ferroelectric domain freezing and charge conduction in proton-irradiated K(H0.36D0.64)2PO4

AU - Kim, Se Hun

AU - Oh, B. H.

AU - Lee, Cheol Eui

PY - 2016/8/1

Y1 - 2016/8/1

N2 - We have studied the effects of proton irradiation in K(H0.36D0.64)2PO4 single crystals by employing impedance spectroscopy. Frequency-dependent dielectric loss measurements allowed us to investigate changes in the domain wall dynamics of a proton-irradiated crystal with a ferroelectric phase transition temperature raised by 5 K. Thus, the increase caused by proton irradiation in the activation energy of the domain freezing in the direction of the hydrogen bonds was found to be significantly greater than in the case of KH2PO4. Furthermore, the temperature dependence of the power-law exponent n in the frequency-dependent electrical conductivity in the proton-conducting systems manifested changes arising from the proton irradiation in the interactions between the mobile ionic (proton) charges and their environments.

AB - We have studied the effects of proton irradiation in K(H0.36D0.64)2PO4 single crystals by employing impedance spectroscopy. Frequency-dependent dielectric loss measurements allowed us to investigate changes in the domain wall dynamics of a proton-irradiated crystal with a ferroelectric phase transition temperature raised by 5 K. Thus, the increase caused by proton irradiation in the activation energy of the domain freezing in the direction of the hydrogen bonds was found to be significantly greater than in the case of KH2PO4. Furthermore, the temperature dependence of the power-law exponent n in the frequency-dependent electrical conductivity in the proton-conducting systems manifested changes arising from the proton irradiation in the interactions between the mobile ionic (proton) charges and their environments.

KW - Electrical conduction

KW - Ferroelectric domain freezing

KW - K(HD)PO

KW - Proton irradiation

UR - http://www.scopus.com/inward/record.url?scp=84983606223&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84983606223&partnerID=8YFLogxK

U2 - 10.3938/jkps.69.547

DO - 10.3938/jkps.69.547

M3 - Article

VL - 69

SP - 547

EP - 550

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

SN - 0374-4884

IS - 4

ER -