Functional Glass Ceramic Based on Potassium Niobate

A new approach to obtaining a functional glass ceramic based on potassium niobate from an amorphous precursor, obtained by rapid cooling of the melt containing small additions of the glass former SiO 2 , is examined. The results indicate that there is promise in the glass ceramic technology, which ensures the formation of cubic KNbO 3 crystals of almost ideal habitus whose flat grains surrounded by thin, composition-regulated glass interlayers can stick to one another. The ceramic KNbO 3 obtained by the glass ceramic technology differs beneficially from its conventional analog by low tanä in the entire range of existence of the ferroelectric phase (below 410°C), which determines its advantage for a host of applications.