Microwave dielectric properties and infrared reflectivity spectra analysis of two novel low-firing AgCa2B2V3O12 (B = Mg, Zn) ceramics with garnet structure

被引：56
|
作者：
Chen, Junqi [1 ]
Tang, Ying [1 ]
Xiang, Huaicheng [1 ]
Fang, Liang [1 ,3 ]
Porwal, Harshit [4 ]
Li, Chunchun [1 ,2 ]
机构：
[1] Guilin Univ Technol, Coll Mat Sci & Engn, Guangxi Univ Key Lab Nonferrous Met Oxide Elect F, State Key Lab Breeding Base Nonferrous Met & Spec, Guilin 541004, Peoples R China
[2] Guilin Univ Technol, Coll Informat Sci & Engn, Guilin 541004, Peoples R China
[3] Three Gorges Univ, Coll Mat & Chem Engn, Key Lab Inorgan Nonmetall Crystalline & Energy Co, Yichang 443002, Peoples R China
[4] Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, England
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2018年 / 38卷 / 14期
关键词：
Ceramics; Garnet structure; Dielectric properties; AgCa2B2V3O12; CHEMICAL COMPATIBILITY; CRYSTAL-STRUCTURE; BOND-VALENCE; MO;
D O I：
10.1016/j.jeurceramsoc.2018.06.021
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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 degrees C for AgCa2Zn2V3O12 and 730 degrees 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 (tau(f)) were achieved by forming ceramic composites with CaTiO3.
引用
收藏
页码：4670 / 4676
页数：7
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