Effect of V2O5 and ZnO Additives on the Sintering Temperature and Microwave Dielectric Properties of Ca[(Li1/3Nb2/3) 0.8Ti 0.2]O3-δ Ceramics

Ji Hong Liao; Ying Dai; Ren Zhou Yang; Wen Chen

doi:10.4028/www.scientific.net/AMR.239-242.77

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 239-242Effect of V2O5 and ZnO Additives on the Sintering...

Effect of V₂O₅ and ZnO Additives on the Sintering Temperature and Microwave Dielectric Properties of Ca[(Li_1/3Nb_2/3)_0.8Ti_0.2]O_3-δ Ceramics

Abstract:

Low-temperature sintered Ca[(Li_1/3Nb_2/3)_0.8Ti_0.2]O_3-δ (CLNT) microwave dielectric ceramics with V₂O₅ and ZnO additives were prepared by the conventional solid state reaction method. The sintering behavior and microwave dielectric properties of CLNT ceramics were investigated. The main diffraction peaks of all the specimens sintered at the temperature under 1150^◦C split due to the coexistence of the non-stoichiometric phase and stoichiometric phase, which all possess CaTiO3-type perovskite structures. ZnO and V₂O₅ combined additives lowered the sintering temperature of CLNT ceramics from 1150^◦C to 1090^◦C. and the Qf values were improved from 18,210 GHz to 20,740 GHz. The CLNT ceramics with 4 wt% ZnO addition sintered at 1090^◦C showed good microwave dielectric properties with ε_r ~39.7, Qf ~20,740 GHz, τf ~8.6 ppm/^◦C. The relationship between dielectric properties and the sintering behavior was also discussed.

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Periodical:

Advanced Materials Research (Volumes 239-242)

Pages:

77-80

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.239-242.77

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Online since:

May 2011

Authors:

Ji Hong Liao, Ying Dai, Ren Zhou Yang, Wen Chen

Keywords:

Ca[(li_1/3Nb_2/3)_0.8Ti_0.2]o_3-δ(clnt), Dielectric Property, Microwave Dielectric Ceramics, Sinterability

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