Low‐Temperature Sintering and Microwave Dielectric Properties of MgZrNb 2 O 8  Ceramics with BaCu (B 2 O 5 ) Addition | Zendy

Tang Xin | Zendy; Yang Hui | Zendy; Zhang Qilong | Zendy; Zhou Juehui | Zendy

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Low‐Temperature Sintering and Microwave Dielectric Properties of MgZrNb 2 O 8 Ceramics with BaCu (B 2 O 5 ) Addition

Author(s) -

Tang Xin,

Yang Hui,

Zhang Qilong,

Zhou Juehui

Publication year - 2014

Publication title -

international journal of applied ceramic technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.4

H-Index - 57

eISSN - 1744-7402

pISSN - 1546-542X

DOI - 10.1111/ijac.12369

Subject(s) - sintering , materials science , ceramic , dielectric , liquid phase , doping , phase (matter) , microwave , analytical chemistry (journal) , mineralogy , composite material , optoelectronics , thermodynamics , chemistry , organic chemistry , physics , quantum mechanics

The effects of BaCu (B 2 O 5 ) doping on sintering characteristics, phase constitute, and dielectric properties of MgZrNb 2 O 8 ceramics were investigated. Results indicated that a small amount of BaCu (B 2 O 5 ) can effectively lower the sintering temperature of MgZrNb 2 O 8 ceramics from 1300°C to 1100°C due to liquid phase sintering effect. However, the second phase of Ba 3 Nb 8 O 21 appeared when the addition of BaCu (B 2 O 5 ) exceeds 2wt%. Typically, 2wt% BaCu (B 2 O 5 )‐added MgZrNb 2 O 8 ceramics sintered at 1100°C for 4 h could reach dense structure and exhibited microwave dielectric properties of ε r = 25.96, Q×f = 65,064 GH z (f = 8.68GHz), and τ f = −47 ppm/°C. Moreover, this ceramic has a chemical compatibility with Ag70/Pd30 electrodes, making it a very promising candidate material for the application of microwave multilayer electronic components.

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