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Mashiyama Hiroyuki

Affiliate Master Yamaguchi University

Rotational Displacement of IO_4 Tetrahedron in the Phase II of Pyridinium Periodate

Ferroelectrics Volume 346 Page 130-135
published_at 2007-01
2007020119.pdf
[fulltext] 165 KB
Title
Rotational Displacement of IO_4 Tetrahedron in the Phase II of Pyridinium Periodate
Creators Miyoshi Tatsuki
Creators Kasano Hironobu
Creators Mashiyama Hiroyuki
Creator Keywords
rotational displacement ordering of pyridinium structure analysis phase transition hydrogen bond
In order to investigate the displacement of the IO_4 tetrahedron in the ferroelectric phase II of pyridinium periodate in detail, we performed X-ray structural analysis at 33 temperatures with the use of the estimated site occupancies of carbon and nitrogen atoms. We confirmed the continuous increase of the rotation angle of the IO_4 tetrahedron about the a^-axis with decreasing temperature in the phase II. This indicates that the IO_4 tetrahedron acts as the displacive structural unit at the transition from phase I to phase II. It is found that the rotation of the IO_4 tetrahedron is correlated with the reorientation of the pyridinium cation through the N-H O type hydrogen bond.
Languages eng
Resource Type journal article
Publishers Taylor and Francis
Date Issued 2007-01
File Version Author’s Original
Access Rights open access
Relations
[ISSN]0015-0193
[NCID]AA00644949
info:doi/10.1080/00150190601182006
[isVersionOf] [URI]http://www.tandf.co.uk/journals/titles/00150193.asp
Schools 大学院理工学研究科(理学)