7. Optical methods for micro and nanoflows investigations

S.V. Ivanova
P.N. Lebedev Physical Institute of RAS, Russia, Moscow

Incommensurate strucrures in nanodomain crystal

The structure of the scattered radiation by a nonlinear barium sodium niobate) crystal in a far field in the temperature range of 20-600 °C was studied. The results showed that the
temperature changes of the scattering patterns correspond to temperature anomalies on the intensity curves of the central scattering component [5] with the direction of the ray perpendicular to the optical axis and the polarization along the one and the complex scattering structure with polarization in the opposite
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