NDLI: Low temperature sintering and microwave dielectric properties of BaO–0.6ZnO–2.9TiO$_{2}$ ceramics using BaCu(B$_{2}$O$

Content Provider	Springer Nature Link
Author	Peng, Sen Xu, Jianming Li, Hao Huang, Tongcheng Wang, Shaojie Xie, Bing Luo, Gaofeng Zhou, Jianhua
Copyright Year	2015
Abstract	In this paper, the effect of BaCu(B$_{2}$O$_{5}$) addition on the sintering process, phase composition, microstructure and microwave dielectric properties of BaO–0.6ZnO–2.9TiO$_{2}$ ceramics were investigated by the conventional solid-state reaction technique. It was suggested that the liquid phase of BaCu(B$_{2}$O$_{5}$) was responsible for the densification of the BaO–0.6ZnO–2.9TiO$_{2}$ ceramics at approximate 900 °C. Using EDX analysis the evaporating of boron was confirmed and Cu$^{2+}$ most likely substituted for Zn$^{2+}$ sites in the phases Ba$_{4}$ZnTi$_{11}$O$_{27}$ and BaZn$_{2}$Ti$_{4}$O$_{10}$. BaTiO$_{3}$ phase appearing at the grain boundary as the derivative of BaCu(B$_{2}$O$_{5}$) had a considerable negative effect on the microwave dielectric properties. The variation tendency of dielectric constant was increased in accord with the trend between bulk densities and the sintering temperature. The maximum Q × f value of 15200 GHz was obtained for the specimen with 7 wt% BaCu(B$_{2}$O$_{5}$)The specimen with 7 wt% BaCu(B$_{2}$O$_{5}$) addition sintered at 900 °C for 1.5 h showed dense microstructure and had acceptable microwave dielectric properties: dielectric constant ε$_{r}$ = 37, Q × f = 15200 GHz and the temperature coefficient of resonant frequency τ$_{f}$ = −9.8 ppm/°C.
Starting Page	8819
Ending Page	8823
Page Count	5
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	26
Issue Number	11
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2015-08-04
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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