A low-firing microwave dielectric material in Li2O-ZnO-Nb2O5 system
A low-firing microwave dielectric material in Li2O-ZnO-Nb2O5 system
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DOI：
10.1016/j.matlet.2010.07.073
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发表时间：
2010-11
影响因子：
3
通讯作者：
L. Pang;Di Zhou
中科院分区：
文献类型：
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作者：
L. Pang;Di Zhou
采用传统固相反应法制备了LiZnNbO 4陶瓷，并首次报道了其微波介电性能。研究了陶瓷的相结构、显微组织和烧结行为。LiZnNbO 4陶瓷可以在950°C左右致密化，并表现出高性能的微波介电性能，具有低的相对介电常数~14.6，高的品质因数（谐振频率/介电损耗）~47，200 GHz（在8.7GHz），谐振频率的负温度系数约为−64.5ppm/°C。LiZnNbO 4陶瓷在其烧结温度下与Ag电极材料化学相容。它是一种很有前途的低温共烧陶瓷微波介质材料。
LiZnNbO4ceramic was fabricated by the conventional solid state reaction method and its microwave dielectric properties were reported for the first time. The phase structure, microstructure, and sintering behavior were also investigated. The LiZnNbO4ceramic could be well densified at around 950°C and demonstrated high performance microwave dielectric properties with a low relative permittivity ~14.6, a high quality factor (resonant frequency/dielectric loss) ~47, 200GHz (at 8.7GHz), and a negative temperature coefficient of resonant frequency approzmiately −64.5ppm/°C. The LiZnNbO4ceramic is chemically compatible with Ag electrode material at its sintering temperature. It can be a promising microwave dielectric material for low-temperature co-fired ceramic technology.