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Cu I n 1− x F e x S 2 – from the new metastable sphalerite to the stable chalcopyrite phase
Author(s) -
Korzun B. V.,
Pushkarev A. V.,
Zhaludkevich A. L.,
Olekhnovich N. M.,
Rusu M.,
LuxSteiner M. C.
Publication year - 2014
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201349030
Subject(s) - tetragonal crystal system , chalcopyrite , sphalerite , metastability , annealing (glass) , crystallography , solid solution , lattice constant , analytical chemistry (journal) , chemistry , crystal structure , phase (matter) , materials science , mineralogy , diffraction , copper , physics , pyrite , metallurgy , organic chemistry , chromatography , optics
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.