Dielectric Property of Barium-Based Glasses Fabricated Using Thailand Resource

Barium-based glasses were fabricated using raw materials from the beneficiation of Thailand resources. Dopants of selected transition and rare-earth element oxides were added as coloring agents in order to produce materials of desired commercial applicability. Dielectric constants, refractive index and absorption spectra of the glass samples were measured. It was found that both dielectric constants and refractive indices increased when the dopants were added. Colorless barium-based glass samples were visually changed to green by additions of copper oxide, to yellow by iron oxide, to pinkish brown by manganese oxide, to pink by erbium oxide, and to lavender blue by neodymium. The fabrication of barium-based glass based on local raw materials is more economical compared to those using imported raw materials.