Significant increase of the ferroelectric phase transition temperature in partially deuterated KH2PO4 by proton irradiation

Se Hun Kim; Kyu Won Lee; B. H. Oh; J. J. Kweon; Cheol Eui Lee

doi:10.1063/1.2784178

Significant increase of the ferroelectric phase transition temperature in partially deuterated KH₂PO₄ by proton irradiation

Se Hun Kim, Kyu Won Lee, B. H. Oh, J. J. Kweon, Cheol Eui Lee

Department of Physics

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

14 Citations (Scopus)

Abstract

The ferroelectric phase transition temperature was significantly raised by 5 K in partially deuterated K H2 P O4 irradiated by a proton beam. Increase in the hydrogen bond length was indicated by the dielectric constant analysis. Deuteron nuclear magnetic resonance (NMR) measurements of the electric field gradient tensor showed atomic displacement after the proton irradiation, and P31 NMR measurements of the chemical shift tensor revealed phosphorous displacement in the hydrogen-bonded direction and the P O4 tetrahedral distortion. Increase of the phase transition temperature can be closely related to the structural modification involving the hydrogen-bond geometry.

Original language	English
Article number	122912
Journal	Applied Physics Letters
Volume	91
Issue number	12
DOIs	https://doi.org/10.1063/1.2784178
Publication status	Published - 2007

Bibliographical note

Funding Information:
This work was supported by the User Program of PEFP (Proton Engineering Frontier Project), as a part of the 21C Frontier R&D Program supported by the Ministry of Science and Technology. The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.2784178

Cite this

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title = "Significant increase of the ferroelectric phase transition temperature in partially deuterated KH2PO4 by proton irradiation",

abstract = "The ferroelectric phase transition temperature was significantly raised by 5 K in partially deuterated K H2 P O4 irradiated by a proton beam. Increase in the hydrogen bond length was indicated by the dielectric constant analysis. Deuteron nuclear magnetic resonance (NMR) measurements of the electric field gradient tensor showed atomic displacement after the proton irradiation, and P31 NMR measurements of the chemical shift tensor revealed phosphorous displacement in the hydrogen-bonded direction and the P O4 tetrahedral distortion. Increase of the phase transition temperature can be closely related to the structural modification involving the hydrogen-bond geometry.",

author = "Kim, {Se Hun} and Lee, {Kyu Won} and Oh, {B. H.} and Kweon, {J. J.} and Lee, {Cheol Eui}",

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AU - Kim, Se Hun

AU - Lee, Kyu Won

AU - Oh, B. H.

AU - Kweon, J. J.

AU - Lee, Cheol Eui

N1 - Funding Information: This work was supported by the User Program of PEFP (Proton Engineering Frontier Project), as a part of the 21C Frontier R&D Program supported by the Ministry of Science and Technology. The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

PY - 2007

Y1 - 2007

N2 - The ferroelectric phase transition temperature was significantly raised by 5 K in partially deuterated K H2 P O4 irradiated by a proton beam. Increase in the hydrogen bond length was indicated by the dielectric constant analysis. Deuteron nuclear magnetic resonance (NMR) measurements of the electric field gradient tensor showed atomic displacement after the proton irradiation, and P31 NMR measurements of the chemical shift tensor revealed phosphorous displacement in the hydrogen-bonded direction and the P O4 tetrahedral distortion. Increase of the phase transition temperature can be closely related to the structural modification involving the hydrogen-bond geometry.

AB - The ferroelectric phase transition temperature was significantly raised by 5 K in partially deuterated K H2 P O4 irradiated by a proton beam. Increase in the hydrogen bond length was indicated by the dielectric constant analysis. Deuteron nuclear magnetic resonance (NMR) measurements of the electric field gradient tensor showed atomic displacement after the proton irradiation, and P31 NMR measurements of the chemical shift tensor revealed phosphorous displacement in the hydrogen-bonded direction and the P O4 tetrahedral distortion. Increase of the phase transition temperature can be closely related to the structural modification involving the hydrogen-bond geometry.

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