The crystal structural analyses of each phase of tetramethyl-ammonium tetrachloronickelate and -ferrate (TMATC-Ni and -Fe)
Ferroelectrics Volume 107 Issue 1
Page 293-298
published_at 1990
Title
The crystal structural analyses of each phase of tetramethyl-ammonium tetrachloronickelate and -ferrate (TMATC-Ni and -Fe)
The crystal structure of each phase of [N(CH_3)_4]_2FeCl_4 was investigated by means of X-ray diffraction at 296, 268, 253 and 223K and those results were compared with that of [N(CH_3)_4]_2NiCl_4. In the Fe salt, it is revealed that each tetrahedral ion is disordered in the room-temperature phase. It is confirmed in the lowest temperature phase that the rotating direction of each tetrahedral ion about an axis parallel to the b axis is in-phase and the rotation angle of FeCl_4^＜2-＞ tetrahedron becomes about two times larger than that in the room-temperature phase. It is also confirmed that the sevenfold phase has the P2_12_12_1 symmetry in the Fe salt.
Languages
eng
Resource Type
journal article
Publishers
Taylor and Francis
Date Issued
1990
File Version
Not Applicable (or Unknown)
Access Rights
metadata only access
Relations
[ISSN]0015-0193
[NCID]AA00644949
[isVersionOf]
[URI]http://www.tandf.co.uk/journals/titles/00150193.asp
Schools
大学院理工学研究科（理学）