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Electrooptical coefficients and temperature and pressure derivatives of the elastic constants of tetragonal Li 2 B 4 O 7
Author(s) -
Bohtý L.,
Haussühl S.,
Liebertz J.
Publication year - 1989
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.2170241113
Subject(s) - electrostriction , thermoelastic damping , tetragonal crystal system , thermal expansion , dielectric , thermodynamics , refractive index , condensed matter physics , materials science , thermal , chemistry , optics , piezoelectricity , physics , crystallography , composite material , crystal structure , optoelectronics
New values for the following properties of tetragonal Li 2 B 4 O 7 are reported: dielectric, electrostrictive, electrooptic, elastic, thermoelastic and piezoelastic constants, coefficients of thermal expansion and indices of refraction. These values are considered to be of superior precision compared to earlier published data. Most elastic constants possess positive temperature derivatives. This anomalous behaviour is not reflected in the pressure derivatives. The electrooptic effects are not large enough to compete with other materials used for technical applications.