Dresden 2014 – wissenschaftliches Programm

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DF: Fachverband Dielektrische Festkörper

DF 21: Nano- and microstructured dielectrics (Joint Session with KR)

DF 21.1: Vortrag

Donnerstag, 3. April 2014, 12:00–12:20, GER 37

Influence of nano crystallites in barium titanate glass ceramics on the ferroelectric phase transition — •Berit Körbitzer, Martun Hovhannisyan, and Martin Letz — Schott AG, Mainz

Dielectrics based on glass ceramics with ferroelectric phases have potential for application as high power capacitors because of their intrinsic pore-free structure. Due to this property glass ceramics reach high dielectric breakdown strengths compared to conventional ceramic materials. In addition the nano cristalline structure broadens the sharp ferroelectric transitions and allows applications up to 200^∘C. By solid solution type doping and variation of crystallite size one can influence the ferroelectric transition temperature of barium titanate based glass ceramics. The effect of strontium and zirconium doping on the dielectric properties and glass stability of this system is analysed.