Cu I n 1− x F e x S 2 – from the new metastable sphalerite to the stable chalcopyrite phase

• Published in: physica status solidi (b) Vol. 251; no. 1; pp. 224 - 228
• Main Authors: Korzun, B. V., Pushkarev, A. V., Zhaludkevich, A. L., Olekhnovich, N. M., Rusu, M., Lux‐Steiner, M. C.
• Format: Journal Article
• Language: English
• Published: 01-01-2014
• ISSN: 0370-1972; 1521-3951
• DOI: 10.1002/pssb.201349030

Stable phase CuIn
1−
x
Fe
x
S
2
(
x
 ≤ 0.10) crystals of chalcopyrite structure were prepared by annealing synthesized CuIn
1−
x
Fe
x
S
2
material with the new quasicubic structure of sphalerite type at the high pressure of 5.5 GPa and temperatures ranging from 1170 to 1270 K. CuIn
1−
x
Fe
x
S
2
solid solutions were formed by mixing of CuInS
2
and CuFe
1.02
S
1.98
that were synthesized in advance. Phase formation in the (1 − 
x
)CuInS
2
–
x
CuFeS
2
system was investigated and the unit‐cell parameters (the lattice constants and the unit‐cell volume) were computed as a function of composition. In addition, the parameter of the tetragonal distortion (
c
/2
a
) for CuIn
1−
x
Fe
x
S
2
solid solutions of chalcopyrite structure was determined.