SYNTHESIS AND CRYSTAL-STRUCTURE OF LAYERED CHALCOGENIDES [KCUFES2 ANDKCUFESE2]

Authors
MUJICA C PAEZ J LLANOS J
Citation
C. Mujica et al., SYNTHESIS AND CRYSTAL-STRUCTURE OF LAYERED CHALCOGENIDES [KCUFES2 ANDKCUFESE2], Materials research bulletin, 29(3), 1994, pp. 263-268
Citations number
11
Categorie Soggetti
Material Science
Journal title
Materials research bulletin → ACNP
ISSN journal
00255408
Volume
29
Issue
3
Year of publication
1994
Pages
263 - 268
Database
ISI
SICI code
0025-5408(1994)29:3<263:SACOLC>2.0.ZU;2-S
Abstract
The new layer chalcogenides KCuFeS2 and KCuFeSe2 have been prepared fr om the copper iron chalcogenide and potassium carbonate. Both phases c rystallize with tetragonal symmetry , in the space group I4/mmm (Nr 13 9) with a=383.7 (1) pm , c=1338.4 (4) pm and a=397.9 (2) pm , c=1378.7 (54) pm respectively in the ThCr2Si2-type structure. The chalcogen at oms form bidimensional layers of edge sharing pyramids. Copper and iro n are statistically distributed in tetrahedral sites. The potassium io ns are placed in cubic sites between the layers.