Birefringence of Mechanically Stressed Potassium Tetrachlorine Zincanate Crystals
V.Yo. Stadnyka, V.M. Gaba b and Z.A. Kohut b
a Ivan Franko Lviv National University, 8 Kyrylo and Mefodiy St., 79005 Lviv, Ukraine
b Lviv Polytechnic National University, Lviv, Ukraine
Full Text PDF
The spectral and baric dependences of the birefringence Δ ni of K2ZnCl4 crystals were studied. It is shown that the dispersion Δ ni(λ) is normal and sharply increases on approaching the absorption edge. It is established that the uniaxial pressures do not change the character but only the values of the dispersions dΔni/dλ and temperature dependences of dΔni/dT.
DOI: 10.12693/APhysPolA.117.133
PACS numbers: 77.84.Fa, 78.20.Ci, 77.80.Bh