Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5462649 | Materials Letters | 2018 | 10 Pages |
Abstract
A novel microwave dielectric ceramic LiNb0.6Ti0.5O3 (LNT) with Ca substitutions LiNb0.6Ti(0.5âx)Ca1.231xO3 was synthesized by solid-state method. It was found that with Ca substitutions, the temperature coefficient of resonant frequency ÏÆ could be adjusted to zero, due to the appearance of the second phase Ca5Nb4Ti3O21. The ÏÆ of the Ca5Nb4Ti3O21 phase is â144.3 ppm/°C through the simulation and numerical value calculation. Furthermore, the LiNb0.6Ti(0.5âx)Ca1.231xO3 ceramic shows a higher dielectric constant εr and a denser microstructure. The LiNb0.6Ti(0.5âx)Ca1.231xO3 ceramic with x = 0.03 sintered at 1100 °C for 2 h shows excellent microwave dielectric properties: εr = 76.89, Q Ã ÆÂ = 4064 GHz, ÏÆÂ = 0.25 ppm/°C.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Huaibao Sun, Enzhu Li, Hongyu Yang, Hongcheng Yang, Shuren Zhang,