Premium
X‐Ray Study of the Structure and Thermal Properties of Ba 1–x K x BiO 3 at Different Temperatures
Author(s) -
Barilo S. N.,
Olekhnovich N. M.,
Orlova N. S.,
Pushkarev A. V.,
Salak A. N.,
Shiryaev S. V.
Publication year - 1996
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170310118
Subject(s) - thermal expansion , diffraction , atmospheric temperature range , crystal structure , thermal , analytical chemistry (journal) , x ray crystallography , lattice (music) , materials science , superconductivity , x ray , chemistry , crystallography , condensed matter physics , thermodynamics , optics , physics , composite material , chromatography , acoustics
The crystal structure as well as the temperature and composition dependences of the lattice parameters, the thermal expansion coefficients in the high‐temperature superconducting Ba 1–x BiO 3 system were determined by an X‐ray powder diffraction method at temperatures between 80 and 650 K. The character of variation of intensity, profiles, and line widths of the diffraction lines for different perovskite structures as a function of the content x and temperatures was found. The correlation between the behaviour of the thermal expansion coefficients and potassium content was revealed at different temperatures. It is shown that the thermal expansion coefficients vary inversely with rising x at any temperature in the range from 80 to 400 K.