THE FLUORIDE SR2ZNGAF9, FIRST MEMBER OF A NEW ANTIFERROELECTRIC FAMILY

Authors
TAIBI K RAVEZ J GUEHRIA A GRANNEC J
Citation
K. Taibi et al., THE FLUORIDE SR2ZNGAF9, FIRST MEMBER OF A NEW ANTIFERROELECTRIC FAMILY, Journal of fluorine chemistry, 84(1), 1997, pp. 7-11
Citations number
11
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Journal of fluorine chemistry → ACNP
ISSN journal
00221139
Volume
84
Issue
1
Year of publication
1997
Pages
7 - 11
Database
ISI
SICI code
0022-1139(1997)84:1<7:TFSFMO>2.0.ZU;2-X
Abstract
Sr2ZnGaF9 is a member of the new tetragonal family (Sr2MMF9)-M-II-F-II I (Mn-II=Mg, Mn, Fe, Co, Ni, Zn; M-III=Al, Cr, Fe, Ga) with unit cell parameters a = 20.04(2) Angstrom, c = 14.3(1) Angstrom, space group 14 , 22. Two phase transitions have been found in Sr2ZnGaF9 at T = 245 K and T = 650 K, using X-ray diffraction, thermal, optical and dielectri c measurements. The room temperature phase is probably antiferroelectr ic.