Abstract
CaO-SiO2-Na2O-MgO glass-ceramics containing Fe2O3 and ZnO were prepared using conventional melting of batch powders, quenching the molten glass in water and crystallization of sintered glass powder. FTIR spectroscopy exhibited main peaks at 930 cm−1 and 950 cm−1 are the characterizations of [SiO4]−2 and [SiO4]−1 bands of glassy network, respectively. XRD patterns introduce Wollastonite and Akermanite as two main crystallized phases of sintered glass-ceramics. Fe2O3 additive resulted in crystallization of Wollastonite more than ZnO additive. Also glass ceramics containing Fe2O3 exhibited sinterability better than ZnO glass ceramics. Consequently, dielectric properties of glass ceramics were measured via a network analyzer at 9 GHz. The bulks of Glass Ceramics showed low dielectric constant and dielectric loss, ɛ r = 5.5 − 7.4 and tgδ = 0.001 − 0.009 respectively. SEM micrograph of glass ceramic samples and glasses depicted morphology of Wollastonite and phase separation respectively.
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Kiani Zitani, M., Rezvani, M. & Asadi Tabrizi, R. Crystallization, sinterability and microwave dielectric properties of CaO-SiO2-Na2O-MgO glass ceramics containing Fe2O3 and ZnO. Electron. Mater. Lett. 10, 131–137 (2014). https://doi.org/10.1007/s13391-013-3103-5
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DOI: https://doi.org/10.1007/s13391-013-3103-5