Ultra-Low Fire Glass-Free Li3FeMo3O12 Microwave Dielectric Ceramics

作者：Liao Qingwei; Wang Yunli; Jiang Feng; Guo Dong^*

来源：Journal of the American Ceramic Society, 2014, 97(8): 2394-2396.

DOI：10.1111/jace.13073

A new ultra-low fire glass-free microwave dielectric material Li3FeMo3O12 was investigated for the first time. Single phase ceramics were obtained by the conventional solid-state route after sintering at 540 degrees C-600 degrees C. The atomic packing fraction, FWHM of the A(g) oxygen-octahedron stretching Raman mode and Qf values of samples sintered at different temperatures correlated well with each other. The sample with a Lower Raman shift showed a higher dielectric constant. Interestingly, the system also showed a distinct adjustable temperature coefficient of resonant frequency (from -84 x 10(-6)/degrees C to 25 x 10 (6)/degrees C).

• 出版日期2014-8
• 单位中国科学院声学研究所