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Abstract
The effect of SiO2/Al2O3 ratio on crystallization and dielectric properties of barium strontium titanate (BST) glass-ceramics has been investigated by differential scanning calorimetry (DSC), X-ray diffractometry (XRD), Raman spectrometry, and dielectric measurements. The experimental results showed that appropriate SiO2/Al2O3 ratio promoted the crystallization of a ferroelectric BST phase and improved the dielectric properties of the BST glass-ceramics. These studies revealed that the Al2O3 not only served as a network former, but also acted as a network modifier, weakening the network. Additionally, the variation of the SiO2/Al2O3 ratio significantly influenced the dielectric properties of the BST glass-ceramics.
Acknowledgments
This work was supported by the National Natural Science Foundation of China through NSFC-RFBR project (Grant No. 51111120091) and by the Russian Foundation for Basic Research (grant No. 11-02-91174-NNSF-а). Ivan Baturin acknowledges the financial support of young scientists in the framework of the Ural Federal University development program.