Ferroelectric sodium-potassium-niobium silicate glass-ceramics

Author

Vernacotola, D.E. ; Chatlani, S. ; Shelby, J.E.

Author_Institution

New York State Coll. of Ceramics, Alfred Univ., NY, USA

Volume

2

fYear

2000

fDate

2000

Firstpage

829

Abstract

Potassium niobate has been formed in potassium-niobium-silicate glasses containing ⩽36 mol% silica. Solid solutions of (K/Na)NbO₃ have been obtained in heat treated sodium-potassium-niobium-silicate glasses containing 24 mol% silica. Although the dielectric constant of these glasses is strongly temperature dependent, it is probable that the dielectric behavior is due to the presence of residual glass and not the result of the presence of ferroelectric crystals. The glass-ceramics also contain a number of other, non-ferroelectric phases

Keywords

ferroelectric ceramics; glass ceramics; heat treatment; niobium compounds; permittivity; potassium compounds; sodium compounds; solid solutions; (K/Na)NbO₃ solid solution; (KNa)NbO₃; KNbO₃; Na₂O-K₂O-Nb₂O₅-SiO ₂; dielectric constant; ferroelectric properties; heat treatment; potassium niobate; sodium-potassium-niobium silicate glass-ceramic; temperature dependence; Crystallization; Crystals; Dielectric constant; Ferroelectric materials; Glass; Grain boundaries; Niobium compounds; Optical materials; Silicon compounds; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on

Conference_Location

Honolulu, HI

ISSN

1099-4734

Print_ISBN

0-7803-5940-2

Type

conf

DOI

10.1109/ISAF.2000.942446

Filename

942446