Observation of a low-symmetry phase in Na_0.5Bi_0.5TiO₃ crystals by optical birefringence microscopy

S. Gorfman, A. M. Glazer, Y. Noguchi, M. Miyayama, H. Luo and P. A. Thomas

Single crystals of Na_0.5Bi_0.5TiO₃ were investigated by optical birefringence microscopy as a function of temperature. Evidence of a temperature-driven rotation of the axis of the optical indicatrix within a monoclinic plane was obtained.

Keywords: sodium bismuth titanate; low-symmetry phases; optical birefringence microscopy; optical axis rotation; perovskites; ferroelectrics; piezoelectrics.

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Observation of a low-symmetry phase in Na0.5Bi0.5TiO3 crystals by optical birefringence microscopy

Observation of a low-symmetry phase in Na_0.5Bi_0.5TiO₃ crystals by optical birefringence microscopy