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Proceedings Paper

Surface and bulk crystallization of some glasses from the BaO-TiO2-B2O3 system
Author(s): Lucica Boroica; Isidor Boroica; Emil Rotiu; Rares V. Medianu; Dagmar Huelsenberg
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Paper 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.

Paper Details

Date Published: 21 October 2004
PDF: 7 pages
Proc. SPIE 5581, ROMOPTO 2003: Seventh Conference on Optics, (21 October 2004);
Show Author Affiliations
Lucica Boroica, National Glass Institute (Romania)
Isidor Boroica, National Glass Institute (Romania)
Emil Rotiu, National Glass Institute (Romania)
Rares V. Medianu, National Institute for Laser, Plasma, and Radiation Physics (Romania)
Dagmar Huelsenberg, Technische Univ. Ilmenau (Germany)

Published in SPIE Proceedings Vol. 5581:
ROMOPTO 2003: Seventh Conference on Optics
Valentin I. Vlad, Editor(s)

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