Surface and bulk crystallization of some glasses from the BaO-TiO2-B2O3 system

Lucica Boroica; Isidor Boroica; Emil Rotiu; Rares V. Medianu; Dagmar Huelsenberg

doi:10.1117/12.582836

21 October 2004 Surface and bulk crystallization of some glasses from the BaO-TiO₂-B₂O₃ system

Lucica Boroica, Isidor Boroica, Emil Rotiu, Rares V. Medianu, Dagmar Huelsenberg

Proceedings Volume 5581, ROMOPTO 2003: Seventh Conference on Optics; (2004) https://doi.org/10.1117/12.582836
Event: ROMOPTO 2003: Seventh Conference on Optics, 2003, Constanta, Romania

Abstract

Dielectric and especially ferroelectric materials can be used in many applications such as dynamic random access memories and infrared sensors. The dielectric properties of such materials have to be improved. For this purpose several compositions in the BaO-B₂O₃-TiO₂ system have been studied. The investigated composition was BaTiO₃ with a different amount of B₂0₃ in the range 25 - 50 mol%. Depending on the B₂O₃ amount the melting temperatures of the investigated glasses were in the range 1100 - 1250°C. The vitreous materials have been submitted to thermal treatment in order to obtain surface and bulk crystallization. The Differential Thermal Analyses (DTA) showed out the tendency of crystallization for these samples in the 600 - 800°C-temperature range. For structural analyses there have been used the X-ray diffractometry. DTA analyses, electronic microscopy and atomic force microscopy on samples crystallized by controlled thermal treatments.

Citation Download Citation

Lucica Boroica, Isidor Boroica, Emil Rotiu, Rares V. Medianu, and Dagmar Huelsenberg "Surface and bulk crystallization of some glasses from the BaO-TiO₂-B₂O₃ system", Proc. SPIE 5581, ROMOPTO 2003: Seventh Conference on Optics, (21 October 2004); https://doi.org/10.1117/12.582836

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