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Thermal Expansion of SrF 2 at Elevated Temperatures
Author(s) -
Kommichau G.,
Neumann H.,
Schmitz W.,
Schumann B.
Publication year - 1986
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.2170211221
Subject(s) - thermal expansion , alkaline earth metal , atmospheric temperature range , lattice (music) , atom (system on chip) , thermal , chemistry , substrate (aquarium) , negative thermal expansion , analytical chemistry (journal) , materials science , thermodynamics , mineralogy , physics , composite material , alkali metal , geology , organic chemistry , chromatography , acoustics , oceanography , computer science , embedded system
The X‐ray method was used to determine the linear thermal expansion coefficient of SrF 2 in the temperature range from 301 to 1173 K. A comparison of the thermal expansion coefficients of CaF 2 , SrF 2 and BaF 2 at T > 300 K shows that the degree of lattice an–harmonicity in the alkaline earth fluorides decreases with increasing mass of the alkaline earth atom. The results for the thermal expansion of SrF 2 are used to discuss the temperature dependence of the lattice mismatch in the SrF 2 /InP film–substrate system.