Temperature stable 0.35Ag2MoO4-0.65Ag0.5Bi0.5MoO4 microwave dielectric ceramics with ultra-low sintering temperatures |
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| Authors: | Xian Xue Xiaofeng Yuan Rong Ma Qibin Yuan Hong Wang |
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| Affiliation: | 1. School of Electronic and Information Engineering & State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an, 710049, China;2. Department of Materials Science and Engineering & Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055, China |
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| Abstract: | In this study, the novel temperature-stable (1-x)Ag2MoO4-xAg0.5Bi0.5MoO4 microwave dielectric ceramics were prepared by a modified solid-state reaction method. The phase composition, microstructures and microwave dielectric properties of the (1-x)Ag2MoO4-xAg0.5Bi0.5MoO4 ceramics were investigated. All the compounds can be sintered well at ultra-low temperatures (<540 °C). The XRD and SEM analysis indicate that the Ag2MoO4 and the Ag0.5Bi0.5MoO4 can coexist with each other. When x = 0.65, the ceramics exhibit the best microwave dielectric properties with a relative permittivity of 23.9, a Q × f value of 16,200 GHz (at 7.3 GHz) and a near-zero TCF value of -2.4 ppm/°C at 520 °C. The results indicate that temperature-stable (1-x)Ag2MoO4-xAg0.5Bi0.5MoO4 ceramics are promising candidates for low temperature co-fired ceramics (LTCC) applications. |
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| Keywords: | Corresponding author at: Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen 518055 China Dielectric properties Ultra-low sintering Near-zero TCF |
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