Hydrogen Atom of KH_2AsO_4 Determined by Neutron Diffraction Study
Journal of the Physical Society of Japan Volume 80 Issue 7
Page 074607-
published_at 2011-07
Title
Hydrogen Atom of KH_2AsO_4 Determined by Neutron Diffraction Study
Creator Keywords
KDP family
hydrogen bonding
ferroelectrics
disordered proton
neutron diffraction
structure analysis
The crystal structure of KH_2AsO_4 (KDA) is refined at room temperature by neutron single-crystal structural analysis. The distance ROO between two oxygen atoms bonded by a hydrogen atom is slightly longer than that in KH_2PO_4 (KDP). A double-peak distribution of H with the splitting distance δ is visualized directly in the nuclear density map obtained by the maximum entropy method. The parameter δ of KDA is also larger than that of KDP, though the transition temperature of KDA is lower than that of KDP.
Languages
eng
Resource Type
journal article
Publishers
The Physical Society of Japan
Date Issued
2011-07
Rights
（c）The Physical Society of Japan()
File Version
Author’s Original
Access Rights
open access
Relations
[ISSN]0031-9015
[NCID]AA00704814
[isVersionOf]
[URI]http://jpsj.ipap.jp/link?JPSJ/80/074607/
[isVersionOf]
Publisher's Note
[URI]http://jpsj.ipap.jp/link?JPSJ/80/108001/
[isVersionOf]
[URI]http://jpsj.ipap.jp/
Schools
大学院理工学研究科（理学）