UNIGE document Scientific Article
previous document  unige:31348  next document
add to browser collection

Crystal growth and x-ray structure of metastable a-KCoPO4

Published in Zeitschrift für Naturforschung. B. 1994, vol. 49, no. 9, p. 1256-1262
Abstract Crystal of KCoPO4 were obtained by growth in a gel of tetramethoxysilane/H2O at 64 Deg. The hexagonal crystals have space group P63, a 18.206(1), c 8.5135(8) .ANG., Z = 24. At. coordinates are given. The structure is isotypic with a-KZnPO4. It comprises an ordered three dimensional network of alternating CoO4 and PO4 tetrahedra, which has rings of six tetrahedra of six tetrahedra in the xy plane. These rings from tunnels in the [001] direction, where the K ions are located. Upon heating, the compd. undergoes a phase transition at .apprx.565 Deg; on cooling, the phase transition occurs at 449 Deg, where it transforms into another structure which is yet unknown. The hexagonal structure is a metastable phase.
Keywords Crystal growthCrystal structure (of a-cobalt potassium phosphate)
Full text
Article (Published version) (833 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Project FNS: 1993
(ISO format)
LUJAN PEREZ, Marcos Luis, KUBEL, Frank, SCHMID, Hans. Crystal growth and x-ray structure of metastable a-KCoPO4. In: Zeitschrift für Naturforschung. B, 1994, vol. 49, n° 9, p. 1256-1262. https://archive-ouverte.unige.ch/unige:31348

471 hits

1 download


Deposited on : 2013-11-26

Export document
Format :
Citation style :