Optical birefringence study of the ferroelectric phase transition in lithium niobate tantalate mixed crystals: LiNb1-xTaxO3.
J PHYS-CONDENS MAT
, Article 235237. 10.1088/0953-8984/20/23/235237.
The optical birefringence of a complete solid-solution series of lithium niobate-tantalate crystals has been measured as a function of temperature. It is found that, irrespective of composition, the high-temperature paraelectric phase has a birefringence close to +0.063, suggesting that this value arises purely from the oxygen octahedra in the crystal structure. It is also observed that a small addition of lithium niobate to the tantalate produces a crystal that has zero birefringence at room temperature.
|Title:||Optical birefringence study of the ferroelectric phase transition in lithium niobate tantalate mixed crystals: LiNb1-xTaxO3|
|Keywords:||24 DEGREES C, X-RAY DIFFRACTION, TEMPERATURE DEPENDENCE, NEUTRON-DIFFRACTION, REFRACTIVE-INDEXES, CURIE-TEMPERATURE, SOLID-SOLUTION, LINBO3, GROWTH, LITAO3|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Earth Sciences|
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