21 October 2004 Surface and bulk crystallization of some glasses from the BaO-TiO2-B2O3 system
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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.
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Lucica Boroica, Lucica Boroica, Isidor Boroica, Isidor Boroica, Emil Rotiu, Emil Rotiu, Rares V. Medianu, Rares V. Medianu, Dagmar Huelsenberg, 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); doi: 10.1117/12.582836; https://doi.org/10.1117/12.582836
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