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Influence of the real structure on the linear thermal expansion coefficient of A15‐type intermetallic compounds from room temperature to 10K
Author(s) -
Herold A.,
Försterling G.,
Kleinstück K.
Publication year - 1981
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.19810161009
Subject(s) - thermal expansion , intermetallic , materials science , condensed matter physics , temperature coefficient , thermodynamics , lattice (music) , stoichiometry , chemistry , metallurgy , composite material , physics , alloy , acoustics
The temperature dependence of the thermal expansion coefficient of a number of A15‐compounds was investigated by X‐ray diffraction experiments. The expansion coefficient of the high‐temperature superconductors with the A15‐structure is highly temperature dependent and has negative values below 100K. Deviations from the stoichiometric composition, substitution of foreign atoms and lattice distortions prevent negative values of the expansion coefficient. The results are discussed in connection with other physical properties of these compounds.