Study on the Property of Bi₂(Mg_2/3Nb_1.1833Sn_0.15)O₇ Dielectric Ceramics Doped with Li₂CO₃

Abstract:

(Bi_2-xLi_x) (Mg_2/3Nb_1.1833Sn_0.15)O₇ piezoelectric ceramics were prepared by conventional solid state reaction method. The microstructure and dielectric properties of dielectric ceramics were studied which was doped by different amount of Li₂CO₃. The experiment results showed that the density of the ceramics would decrease, but have little effect on the microstructure of the ceramics when the amount of the Li₂CO₃ doped increases. With the increasing of Li₂CO₃ doped, the dielectric constant(ε_r) and dielectric loss(tanδ) of dielectric ceramics first decreases and then increases. When tested in 1MHz frequency, the piezoelectric ceramics display the optimum properties tanδ is 0.00009, ε_r is 163 while Li₂CO₃ doped amount is 0.05 mol%.

• Periodical: Advanced Materials Research (Volume 549)
• Pages: 749-752
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.549.749
• Online since: July 2012
• Authors: Hai Tang Hua, Xin You Huang, Zhi Wen Zhu, Yin Qun Hua, Yan Li
• Keywords: Bi₂ (Mg_2/3Nb_2/3) O₇, Dielectric Ceramics, Dielectric Property, Li₂CO₃

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