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Abstracts
Temperature dependencies of the characteristic optical paths difference D(Τ) of K2SeO4 crystal in the range of 80-295 K were measured using the Jamen type interferometer. Significant anomalies of D(Τ) dependencies in the vicinity of incommensurate-paraelectric phase transition (T_{i} = 130 K) are observed. On the basis of D(Τ) temperature dependencies measured experimentally and linear expansion l(Τ) known, the temperature derivative of the refractive indices dn/dT are found to be negative in the ranges above and below the temperature T_{i}=130 K.
Journal
Year
Volume
Issue
Pages
557-562
Physical description
Dates
published
1997-09
received
1997-04-23
Contributors
author
- L'viv State University, 8 Kyryla and Mefodiya Sir., 290005, L'viv, Ukraine
author
- L'viv State University, 8 Kyryla and Mefodiya Sir., 290005, L'viv, Ukraine
References
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Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv92z309kz