Influence of Mechanical Stress on the Birefringence Properties of (N(CH3)4)2ZnCl4 Crystals
I. Polovinko, S. Sveleba, O. Vlokh and V. Zhmurko
Lviv University, Physical Department, Lomonosova str. 8, 290005, Lviv, Ukraine
Received: September 27, 1991; in final form: January 2, 1992
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The influence of applied mechanical stress on the birefringence of (N(CH3)4)2ZnCl4 crystal in the temperature region of its incommensurate phase was investigated using Senarmonth's method (λ = 633 nm). The value of pinning force for the samples with different defectiveness was experimentally determined.
DOI: 10.12693/APhysPolA.81.409
PACS numbers: 77.80.Bh