Structure and dielectric properties of novel low temperature co-fired Bi₂O₃-RE₂O₃-MoO₃ (RE=Pr, Nd, Sm, and Yb) based microwave ceramics

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• 作者：Hao Li^a ; Zonglian Huang^a ; Lijin Cheng^a ; ^b ; Shu Kong^a ; Shaojun Liu^a ; ^{liumatthew@csu.edu.cn}
• 关键词：Dielectric properties ; LTCC ; Bi2O3-xRE2O3-yMoO3 ceramics ; Microwave ceramics
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：43
• 期：5
• 页码：4570-4575
• 全文大小：1050 K
• 卷排序：43

文摘

Novel monoclinic Bi2O3-xRE2O3-yMoO3 (RE=Pr, Nd, Sm, and Yb) based low temperature co-fired ceramics (LTCC) systems with high sintering density and low microwave dielectric loss are synthesized by conventional solid state reaction technique. The structure and dielectric properties of Bi2O3-xRE2O3-yMoO3 ceramics are investigated. Dense BiNdMoO6 ceramics sintered at 900 °C for 8 h in air have a low dielectric constant εr=~7.5, a high quality factor Q×f=~ 24, 800 GHz at 7.0 GHz, and τf=~−16 ppm/̊C. Especially, good chemical compatibility of BiNdMoO6 with Ag electrodes is represented as well. In contrast, BiSmMoO6 ceramics sintered at 1000 °C for 8 h show enhanced Q×f=~43, 700 GHz at 7.8 GHz with εr=~8.5 and τf=~−27 ppm/°C. Bi2O3-xRE2O3-yMoO3 (RE=Pr, Nd, Sm, and Yb) based ceramics could be considered as promising microwave ceramics for LTCC applications.