文档介绍：Ceramics International 30 (2004) 1341–1345
Influences of Fe2O3 additives on the dielectric properties of BiNbO4
ceramics under different sintering atmosphere
Yong Yang∗, Shihua Ding, Xi Yao
Functional Materials Research Laboratory, Tongji University, Shanghai 200092, China
Received 4 December 2003; received in revised form 18 December 2003; accepted 22 December 2003
Available online 6 May 2004
Abstract
BiNbO4 ceramic is one of the potential low-firing microwave dielectric materials for microwave applications. In this work, Fe oxides were
doped into BiNbO4 ceramics. The samples were sintered in air and flowing N2, respectively. parative study of the sintering performance,
the crystalline morphology and the dielectric properties (at both low frequency and microwave frequency) of samples sintered under both
atmosphere were performed by means of SEM, LCR meter, network analyzer, and thermal environmental test chamber. Material’s dielectric
performance under microwave frequency is especially considered. Then, the influences of Fe2O3 additives on the dielectric properties of
BiNbO4 ceramics is investigated. At the same time, the defect influences on the dielectric properties were also discussed.
© 2004 Elsevier Ltd and Techna Group . All rights reserved.
Keywords: B. Defect; BiNbO4 ceramics; Sintering atmosphere
1. Introduction BiNbO4 ceramics, and sintered the