Optical Birefringence Investigation of the Memory Effect in Barium Sodium Niobate

1 January 1985

journal article
Published by IOP Publishing in Japanese Journal of Applied Physics

Vol. 24 (S2)
https://doi.org/10.7567/jjaps.24s2.290

Abstract

We analyze optical birefringence measurements subsequent to annealings at various temperatures in the incommensurate phase of Ba₂NaNb₅O₁₅. We observe a complex behaviour assigned to the fact that a coexistence of the incommensurate phase with the “quasicommensurate” phase can be induced by the annealings. Results concerning the role of stoechiometry defects are also discussed.

Keywords

SODIUM
BIREFRINGENCE
OPTICAL
BARIUM
DEFECTS
NIOBATE
COEXISTENCE
MEMORY
NANB

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