Incoherent inelastic neutron scattering study of antiferroelectric Cu(HCOO)2·4H2O Crystal

T. Omura, Keiji Itoh, C. Moriyoshi, S. Ikeda, T. Kamiyama, S. F. Parker

Research output: Contribution to journalArticle

Abstract

Incoherent inelastic neutron scattering spectra of antiferroelectric Cu(HCOO)2·4H2O and its isomorphous Cu(HCOO)2·4H2O were measured. Comparing the spectra between these crystals, we extracted the H2O-related modes from many other modes. We find new peaks in the energy range of the H2O librational modes. The spectra in this range become broad above the phase transition temperature indicating that the antiferroelectric dynamics are dominated by the order-disorder of the H2O molecules induced by the out-of-plane hydrogen motion.

Original languageEnglish
Pages (from-to)287-290
Number of pages4
JournalJournal of Neutron Research
Volume12
Issue number4
DOIs
Publication statusPublished - 2004
Externally publishedYes

Fingerprint

Inelastic neutron scattering
Order disorder transitions
Superconducting transition temperature
inelastic scattering
neutron scattering
Phase transitions
Hydrogen
Crystals
Molecules
crystals
transition temperature
disorders
hydrogen
molecules
energy

Keywords

  • Cu(HCOO)·4HO
  • Dynamics of HO
  • Incoherent inelastic neutron scattering

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

Cite this

Incoherent inelastic neutron scattering study of antiferroelectric Cu(HCOO)2·4H2O Crystal. / Omura, T.; Itoh, Keiji; Moriyoshi, C.; Ikeda, S.; Kamiyama, T.; Parker, S. F.

In: Journal of Neutron Research, Vol. 12, No. 4, 2004, p. 287-290.

Research output: Contribution to journalArticle

Omura, T. ; Itoh, Keiji ; Moriyoshi, C. ; Ikeda, S. ; Kamiyama, T. ; Parker, S. F. / Incoherent inelastic neutron scattering study of antiferroelectric Cu(HCOO)2·4H2O Crystal. In: Journal of Neutron Research. 2004 ; Vol. 12, No. 4. pp. 287-290.
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AU - Kamiyama, T.

AU - Parker, S. F.

PY - 2004

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AB - Incoherent inelastic neutron scattering spectra of antiferroelectric Cu(HCOO)2·4H2O and its isomorphous Cu(HCOO)2·4H2O were measured. Comparing the spectra between these crystals, we extracted the H2O-related modes from many other modes. We find new peaks in the energy range of the H2O librational modes. The spectra in this range become broad above the phase transition temperature indicating that the antiferroelectric dynamics are dominated by the order-disorder of the H2O molecules induced by the out-of-plane hydrogen motion.

KW - Cu(HCOO)·4HO

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KW - Incoherent inelastic neutron scattering

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