Journal of the European Ceramic Society ( IF 5.7 ) Pub Date : 2018-06-15 , DOI: 10.1016/j.jeurceramsoc.2018.06.021 Junqi Chen , Ying Tang , Huaicheng Xiang , Liang Fang , Harshit Porwal , Chunchun Li
Two Ag-containing microwave dielectric ceramics AgCa2B2V3O12 (B = Mg, Zn) with garnet structure were prepared through solid-state reaction method. Dense ceramics were obtained at low sintering temperatures, 665 °C for AgCa2Zn2V3O12 and 730 °C for AgCa2Mg2V3O12. Their microwave dielectric properties were characterized for the first time and analyzed by means of packing fraction, bond valence, octahedral distortion, Raman spectra and infrared reflectivity spectra. Both compounds displayed high chemical compatibility with Ag electrodes. Additionally, thermally stable ceramics with near-zero temperature coefficients of resonance frequency (τf) were achieved by forming ceramic composites with CaTiO3.
中文翻译:
两种具有石榴石结构的新型低烧AgCa 2 B 2 V 3 O 12(B = Mg,Zn)陶瓷的微波介电特性和红外反射光谱分析
通过固相反应法制备了两种石榴石结构的含Ag的微波介电陶瓷AgCa 2 B 2 V 3 O 12(B = Mg,Zn)。在低烧结温度下获得致密陶瓷,对于AgCa 2 Zn 2 V 3 O 12为665°C,对于AgCa 2 Mg 2 V 3 O 12为730°C。首次表征了它们的微波介电性能,并通过堆积分数,键合价,八面体形变,拉曼光谱和红外反射光谱进行了分析。两种化合物均显示出与Ag电极的高度化学相容性。另外,与共振频率(接近零温度系数的热稳定的陶瓷τ ˚F)通过用的CaTiO形成陶瓷复合材料来实现3。