INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Effect of the Molar Ratio of Potassium and Sodium on Dielectric Properties of Lithium-aluminosilicate Photosensitive Glass-ceramics |
ZHANG Hao1, ZHU Yongchang1, CUI Zhu1, HAN Xu1, GENG Andong2
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1 China Building Materials Academy, Beijing 100024, China; 2 School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621000, China |
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Abstract As a new type substrate material of glass interposer, the dielectric properties of photosensitive glass-ceramics have become one of the key factors limiting their development. In this study, photosensitive glass-ceramics with different molar ratios of potassium to sodium were prepared by melting method. The effects of molar ratio of potassium to sodium on dielectric constant and dielectric loss of the samples were analyzed by means of network vector analyzer, Raman spectroscopy, infrared spectroscopy and X-ray diffraction. The results showed that the sample with 0 molar ratio of potassium to sodium (without K2O) had the lowest dielectric constant and dielectric loss, and the values were 5.0 and 4.9×10-3 (1 GHz), respectively. It suggested that increasing the substitution of Na2O for K2O could promote the glass structure more compact and reduce glass polarization, which would decrease the dielectric constant and loss of photosensitive glass-ceramics.
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Published: 12 March 2020
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About author:: Hao Zhang,a graduate student of China Building Material Academy, focusing on the research of functional glasses; Yongchang Zhu, Doctor, Master's supervisor, his main research directions: 1. Preparation and applications of rare earth doped luminescent glass; 2. Research and development of cathode window glass for low-light night vision devices. Currently, he is Vice President of Quartz and Special Glass Academy, Director of Youth Committee of China Material Research Association and Project Manager of Cooperative Support Center of National Defense Bureau of Science and Technology. He is a national scientific and technological pacesetter of "stressingideals and making contributions". In recent years, he has been engaged in the research and development of military special optical glasses. And he has won one first prize, one second prize for scientific and technological progress at the ministerial level, one first prize and one third prize for the progress of science and technology at the Building Materials Group, and published more than 20 academic papers and more than 10 patents. |
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