Structure and infrared reflectivity spectra of novel Mg3Ga2GeO8 microwave dielectric ceramic with high Q
| Autor: | Zijian Yang, Zhiwei Zhang, Laiyuan Ao, Qianbiao Du, Liang Fang, Aihong Yang, Ying Tang, Weishuang Fang, Jie Li, Junqi Chen |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Process Chemistry and Technology Analytical chemistry 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology Atomic packing factor 01 natural sciences Spectral line Surfaces Coatings and Films Electronic Optical and Magnetic Materials Octahedron visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites Tetrahedron visual_art.visual_art_medium Orthorhombic crystal system Ceramic 0210 nano-technology Microwave |
| Zdroj: | Ceramics International. 47:2450-2455 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2020.09.087 |
| Popis: | Mg3Ga2GeO8 ceramics were synthesised by means of the high-temperature solid-state reaction method. The Mg3Ga2GeO8 ceramics of the orthorhombic structure type comprised an Imma space group composed of three different octahedrons and one tetrahedron. The dense ceramic was obtained at 1340 °C and presented excellent microwave dielectric performances, namely, low er = 9.41, high Q × f = 133, 113 GHz, and τf = −63.54 ppm/°C. The intrinsic microwave dielectric performances were analysed on the basis of the packing fraction, octahedron distortion, and infrared reflectivity spectra of the Mg3Ga2GeO8 ceramics. These merits render the Mg3Ga2GeO8 ceramics an appropriate candidate for millimetre-wave frequencies. |
| Databáze: | OpenAIRE |
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