Two novel low-firing Na(2)AMg(2)V(3)O(12)(A=Nd, Sm) ceramics and their chemical compatibility with silver
Two novel low-firing Na(2)AMg(2)V(3)O(12)(A=Nd, Sm) ceramics and their chemical compatibility with silver
复制标题
两种新型低烧Na(2)AMg(2)V(3)O(12)(A=Nd,Sm)陶瓷及其与银的化学相容性
DOI：
10.1016/j.ceramint.2016.11.099
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发表时间：
2017
影响因子：
5.2
通讯作者：
Xing Xianran
中科院分区：
文献类型：
--
作者：
Tang Ying;Jiang Xuewen;Xiang Huaicheng;Li Chunchun;Fang Liang;Xing Xianran
Two novel microwave dielectric ceramics Na2AMg2V3O12(A=Nd, Sm) with cubic garnet structure were obtained by the conventional solid-state reaction method. Both ceramics could be well densified at 850 °C for 4 h. The Na2NdMg2V3O12(NNMV) ceramic exhibited good microwave dielectric properties with a permittivityεrof 12, a quality factorQu×fvalue of 26,544 GHz (at 10 GHz) and a negative temperature coefficient of resonant frequencyτfvalue of −63 ppm/°C and the Na2SmMg2V3O12(NSMV) ceramic had aεrof 12.1, aQu×fvalue of 36,207 GHz (at 9.8 GHz) and a negativeτfvalue of −69 ppm/°C. The large negativeτfvalues could be compensated by forming solid solution with LiCa2Mg2V3O12and 0.7Na2AMg2V3O12(A=Nd, Sm)–0.3LiCa2Mg2V3O12sintered at 880 °C for 4 h exhibited a near zeroτf~−4.5 ppm/°C and 5.5 ppm/°C, respectively. Both ceramics were found to be chemically compatible with Ag electrode at 850 °C for 4 h. These merits make them promising candidates for low-temperature co-fired ceramic technology (LTCC).
