Structure and dielectric properties of novel low temperature co-fired Bi2O3-RE2O3-MoO3 (RE=Pr,Nd, Sm,and Yb) based microwave ceramics |
| |
| Affiliation: | 1. Department of Materials and Ceramics Engineering, CICECO – Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal;2. School of Engineering, Brown University, Providence, RI 02912, USA;1. School of Electronic and Information Engineering and State Key Laboratory for Mechanical Behavior of Materials, Xi''an Jiaotong University, Xi''an 710049, China;2. Peter Grünberg Institute and Ernst Ruska-Center for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich, Jülich 52425, Germany |
| |
| Abstract: | 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. |
| |
| Keywords: | Dielectric properties LTCC Microwave ceramics |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
