Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Synthesis and microwave dielectric properties of Bi2Ge3O9 ceramics for application as advanced ceramic substrate

Authors
Ma, Xing-HuaKweon, Sang-HyoNahm, SahnKang, Chong-YunYoon, Seok-JinKim, Young-Sik
Issue Date
2월-2017
Publisher
ELSEVIER SCI LTD
Keywords
Bi2Ge3O9 ceramics; LTCC; Microwave dielectric properties; Advanced ceramic substrates
Citation
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, v.37, no.2, pp.605 - 610
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume
37
Number
2
Start Page
605
End Page
610
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/84505
DOI
10.1016/j.jeurceramsoc.2016.08.037
ISSN
0955-2219
Abstract
During the synthesis of Bi2Ge3O9 ceramics using Bi2O3 + 3 GeO2 powders, the Bi4Ge3O12 phase was formed at low temperature (<= 800 degrees C). Bi4Ge3O12 preferentially adopted GeO2-excess phase, and this phase was consistently present in the sintered Bi2Ge3O9 ceramic as a secondary phase. Therefore, Bi4Ge3O12 powder was first calcined and subsequently reacted with GeO2 powder to obtain the pure Bi2Ge3O9 ceramic through the following reaction: 1/2B(4)Ge(3)O(12) + 3/2GeO(2) -> Bi2Ge3O9. Formation of the Bi2Ge3O9 phase was initiated at temperature of 850 degrees C. The pure Bi2Ge3O9 ceramic sintered at 875 degrees C for 8 h had a dense microstructure with an average grain size of 2.7 mu m. Furthermore, the pure Bi2Ge3O9 ceramic exhibited promising microwave dielectric properties for the advanced ceramic substrate: epsilon(r) = 9.7, Qxf = 48,573 GHz and tau(f) = -29.5 ppm/degrees C. (C) 2016 Elsevier Ltd. All rights reserved.
Files in This Item
There are no files associated with this item.
Appears in
Collections
College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
Graduate School > KU-KIST Graduate School of Converging Science and Technology > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Altmetrics

Total Views & Downloads

BROWSE