University of Oulu

Xiang, H, Bai, Y, Varghese, J, Li, C, Fang, L, Jantunen, H. Ultralow temperature cofired BiZn2VO6 dielectric ceramics doped with B2O3 and Li2CO3 for ULTCC applications. J Am Ceram Soc. 2019; 102: 1218– 1226. https://doi.org/10.1111/jace.15953

Ultralow temperature cofired BiZn₂VO₆ dielectric ceramics doped with B₂O₃ and Li₂CO₃ for ULTCC applications

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Author: Xiang, Huaicheng1,2; Bai, Yang2; Varghese, Jobin2;
Organizations: 1Ministry‐Province Jointly‐Constructed Cultivation Base for State Key Laboratory of Processing for Non‐ferrous Metal and Featured Materials, Guangxi Universities Key Laboratory of Non‐ferrous Metal Oxide Electronic Functional Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology
2Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.8 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2018121150358
Language: English
Published: John Wiley & Sons, 2019
Publish Date: 2019-07-21
Description:

Abstract

In this paper, BiZn₂VO₆ doped with sintering aids of B₂O₃ and Li₂CO₃ is investigated in order to broaden the options for ultralow temperature cofired ceramics (ULTCC). The sintering behavior, microstructure, and microwave dielectric properties are studied. In combination with 1 wt% B₂O₃ and 5 wt% Li₂CO₃ dopants, the sintering temperature of the BiZn₂VO₆ ceramics was reduced from 780°C to 600°C. The co‐doped BiZn₂VO₆ ceramics exhibited a low relative permittivity (εr) of 8.9 and a quality factor (Q × f) of 13 000 GHz at a microwave‐range frequency of 9 GHz. The temperature coefficient of resonant frequency (τf) was measured to be −97 ppm/°C. The average linear coefficient of thermal expansion (CTE) was 7.2 ppm/°C. With the low sintering temperature, the co‐doped BiZn₂VO₆ ceramics are compatible to be cofired with cost‐effective aluminum electrodes. This was proven in a reaction test between the BiZn₂VO₆‐B₂O₃‐Li₂CO₃ and aluminum powders, in which no chemical interaction could be detected. These promising properties make the B₂O₃‐Li₂CO₃ co‐doped BiZn₂VO₆ an ideal candidate for ULTCC applications.

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Series: Journal of the American ceramic society
ISSN: 0002-7820
ISSN-E: 1551-2916
ISSN-L: 0002-7820
Volume: 102
Issue: 3
DOI: 10.1111/jace.15953
OADOI: https://oadoi.org/10.1111/jace.15953
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Subjects:
Funding: The authors appreciate the financial support from the Natural Science Foundation of China (Nos. 51502047, 21561008, and 21761008), the Natural Science Foundation of Guangxi Zhuang Autonomous Region (Nos. 2015GXNSFFA139003, 2016GXNSFBA380134, and 2016GXNSFAA380018), Project of Scientific Research and Technical Exploitation Program of Guilin (Nos. 2016010702‐2 and 20170225). Author Yang Bai acknowledges the European Union's Horizon 2020 research and innovation programunder the Marie Sklodowska‐Curie Grant Agreement No. “705437”. Authors Heli Jantunen and Jobin Varghese are grateful to European Research Council Project (No. 24001893) for financial assistance.
Copyright information: © 2018 The American Ceramic Society. This is the peer reviewed version of the following article: Xiang H, Bai Y, Varghese J, Li C, Fang L, Jantunen H. Ultralow temperature cofired BiZn2VO6 dielectric ceramics doped with B2O3 and Li2CO3 for ULTCC applications. J Am Ceram Soc. 2019; 102: 1218– 1226, which has been published in final form at https://doi.org/10.1111/jace.15953. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.