Stadnyk, V.Yo.; Romanyuk, M.O.; Chyzh, O.Z.; Vachulovych, V.F.
(Condensed Matter Physics, 2007)
The dependencies of the birefringence ∆ni of K₂SO₄ crystals in wide spectral (250–800 nm) ranges, as well as the effect of uniaxial mechanical stress on them have been studied. The values of ni for K₂SO₄ are found to be ...