Dynamical properties of protonic conductor K3H(SeO 4)2

Fumihito Shikanai; Keisuke Tomiyasu; Naofumi Aso; Shinichi Itoh; Susumu Ikeda; Takashi Kamiyama; Shinya Tsukada; Jun Kano; Seiji Kojima

doi:10.1080/00150193.2011.577715

Dynamical properties of protonic conductor K₃H(SeO ₄)₂

Fumihito Shikanai, Keisuke Tomiyasu, Naofumi Aso, Shinichi Itoh, Susumu Ikeda, Takashi Kamiyama, Shinya Tsukada, Jun Kano, Seiji Kojima

Research output: Contribution to journal › Conference article › peer-review

Abstract

Dynamical properties of protonic conductor K₃H(SeO ₄)₂ were examined by using various techniques, Brillouin scattering, quasi elastic, and inelastic neutron scattering. No significant anomaly was observed in longitudinal and transverse acoustic modes. In each experiment, a Lorentzian shaped spectrum was observed at extremely low energy, (less than 0.1 meV). The spectra in Brillouin and inelastic neutron scattering at the zone boundary originate from rotational modes of SeO₄ tetrahedra at Γ-and L-point, respectively. The peak positions, shapes, and widths of the spectra are consistent with each other, while the integrated intensities show complementary temperature dependence. The lifetimes of those modes, about 10^-10 s, agree with the stationary time of conduction protons obtained from Q dependence of width in quasi elastic neutron scattering.

Original language	English
Pages (from-to)	101-107
Number of pages	7
Journal	Ferroelectrics
Volume	416
Issue number	1
DOIs	https://doi.org/10.1080/00150193.2011.577715
Publication status	Published - 2011
Event	10th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity, RCBJSF-10 - Yokohama, Japan Duration: Jun 20 2010 → Jun 24 2010

Keywords

Brillouin scattering
KH(SeO)
inelastic scattering
neutron
protonic conductor
quasi-elastic scattering

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1080/00150193.2011.577715

Cite this

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title = "Dynamical properties of protonic conductor K3H(SeO 4)2",

abstract = "Dynamical properties of protonic conductor K3H(SeO 4)2 were examined by using various techniques, Brillouin scattering, quasi elastic, and inelastic neutron scattering. No significant anomaly was observed in longitudinal and transverse acoustic modes. In each experiment, a Lorentzian shaped spectrum was observed at extremely low energy, (less than 0.1 meV). The spectra in Brillouin and inelastic neutron scattering at the zone boundary originate from rotational modes of SeO4 tetrahedra at Γ-and L-point, respectively. The peak positions, shapes, and widths of the spectra are consistent with each other, while the integrated intensities show complementary temperature dependence. The lifetimes of those modes, about 10-10 s, agree with the stationary time of conduction protons obtained from Q dependence of width in quasi elastic neutron scattering.",

keywords = "Brillouin scattering, KH(SeO), inelastic scattering, neutron, protonic conductor, quasi-elastic scattering",

author = "Fumihito Shikanai and Keisuke Tomiyasu and Naofumi Aso and Shinichi Itoh and Susumu Ikeda and Takashi Kamiyama and Shinya Tsukada and Jun Kano and Seiji Kojima",

year = "2011",

doi = "10.1080/00150193.2011.577715",

language = "English",

volume = "416",

pages = "101--107",

journal = "Ferroelectrics",

issn = "0015-0193",

publisher = "Taylor and Francis Ltd.",

number = "1",

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T1 - Dynamical properties of protonic conductor K3H(SeO 4)2

AU - Shikanai, Fumihito

AU - Tomiyasu, Keisuke

AU - Aso, Naofumi

AU - Itoh, Shinichi

AU - Ikeda, Susumu

AU - Kamiyama, Takashi

AU - Tsukada, Shinya

AU - Kano, Jun

AU - Kojima, Seiji

PY - 2011

Y1 - 2011

N2 - Dynamical properties of protonic conductor K3H(SeO 4)2 were examined by using various techniques, Brillouin scattering, quasi elastic, and inelastic neutron scattering. No significant anomaly was observed in longitudinal and transverse acoustic modes. In each experiment, a Lorentzian shaped spectrum was observed at extremely low energy, (less than 0.1 meV). The spectra in Brillouin and inelastic neutron scattering at the zone boundary originate from rotational modes of SeO4 tetrahedra at Γ-and L-point, respectively. The peak positions, shapes, and widths of the spectra are consistent with each other, while the integrated intensities show complementary temperature dependence. The lifetimes of those modes, about 10-10 s, agree with the stationary time of conduction protons obtained from Q dependence of width in quasi elastic neutron scattering.

AB - Dynamical properties of protonic conductor K3H(SeO 4)2 were examined by using various techniques, Brillouin scattering, quasi elastic, and inelastic neutron scattering. No significant anomaly was observed in longitudinal and transverse acoustic modes. In each experiment, a Lorentzian shaped spectrum was observed at extremely low energy, (less than 0.1 meV). The spectra in Brillouin and inelastic neutron scattering at the zone boundary originate from rotational modes of SeO4 tetrahedra at Γ-and L-point, respectively. The peak positions, shapes, and widths of the spectra are consistent with each other, while the integrated intensities show complementary temperature dependence. The lifetimes of those modes, about 10-10 s, agree with the stationary time of conduction protons obtained from Q dependence of width in quasi elastic neutron scattering.

KW - Brillouin scattering

KW - KH(SeO)

KW - inelastic scattering

KW - neutron

KW - protonic conductor

KW - quasi-elastic scattering

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JO - Ferroelectrics

JF - Ferroelectrics

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T2 - 10th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity, RCBJSF-10

Y2 - 20 June 2010 through 24 June 2010

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