Accurate Determination of the Ordinary-Ray Refractive Index in BaTiO3
- 1 September 1964
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 35 (9), 2638-2639
- https://doi.org/10.1063/1.1713816
Abstract
The ordinary‐ray index of refraction at 5893 Å in BaTiO3 was measured in the range 20°–160°C by a refined Chaulnes' method with an average error of 0.35%. Two BaTiO3 crystals were studied and the results indicate a constant index of 2.368 from 20° to 105°C; above the Curie point the ordinary index increased by 1.3% to 2.398 and remained constant to 160°C.Keywords
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