NDLI: Preparation and dielectric properties of glass–ceramics in K$_{2}$O–Al$_{2}$O$_{3}$–SiO$_{2}$–CaO–CuO–TiO$

Content Provider	Springer Nature Link
Author	Zhang, Liyuan Liu, Shiquan
Copyright Year	2017
Abstract	Glass–ceramics containing CaCu$_{3}$Ti$_{4}$O$_{12}$(CCTO) crystalline phase were successfully prepared by air-quenching K$_{2}$O–Al$_{2}$O$_{3}$–SiO$_{2}$–CaO–CuO–TiO$_{2}$ melts followed by heat treatment. X-ray diffraction, scanning electron microscopy and dielectric spectroscopy were used to characterize the samples. The results indicate that the as-synthesized samples are well crystallized upon the heat treatment. The main crystalline phases are KAlSi$_{2}$O$_{6}$, CCTO, CaTiO(SiO$_{4}$), TiO$_{2}$ and Cu$_{2+1}$O. The dielectric constants of the as-synthesized samples increase with the total contents of CaO, CuO, TiO$_{2}$. However, the dielectric constants of the heat treated samples is related to the formed CCTO crystalline phase, whose content is influenced by the glassy phase in the as-synthesized sample or re-melting of the KAlSi$_{2}$O$_{6}$ phase during the heat-treatment. The heat treated sample having the highest amount of CCTO phase shows the largest dielectric constant of 38. The dielectric losses (100 kHz, room temperature) of the samples are relatively smaller than the reported data in the literature.
Starting Page	6456
Ending Page	6460
Page Count	5
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	28
Issue Number	9
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2017-01-12
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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