ANTIFERRODISTORTIVE ORDER IN THE NEW SOLID-SOLUTION CRZR0.75NB0.25F6

Authors
GOUBARD F LLORENTE S BIZOT D CHASSAING J QUARTON M
Citation
F. Goubard et al., ANTIFERRODISTORTIVE ORDER IN THE NEW SOLID-SOLUTION CRZR0.75NB0.25F6, Journal of solid state chemistry, 131(2), 1997, pp. 231-235
Citations number
16
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Physical
Journal title
Journal of solid state chemistry → ACNP
ISSN journal
00224596
Volume
131
Issue
2
Year of publication
1997
Pages
231 - 235
Database
ISI
SICI code
0022-4596(1997)131:2<231:AOITNS>2.0.ZU;2-I
Abstract
The new compound CrZr0.75Nb0.25F6 has been synthesized. Structural det ermination by the Rietveld full-profile technique has been carried out on powdered samples. This compound crystallizes in the orthorhombic s ystem, space group Pnma, with a = 11.5728(4) Angstrom, b = 7.9671(2) A ngstrom, and c = 5.8203(2) Angstrom The structure displays an antiferr odistortive order of elongated CrF6 octahedra induced by a cooperative Jahn-Teller effect. This result is compared with ferrodistortive orde r of CrF6 octahedra in the HT CrNbF6 form. The magnetic behavior of bo th CrNbF6 and CrZr0.75Nb0.25F6 at low temperature is described. (C) 19 97 Academic Press.