LIU Baoling¹, WANG Xin¹, ZHUANG Zhiqiang¹, LU Yudong^1.2

(1.Key Lab of Specially Functional Materials of Ministry of Education, College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640)

(2.Key Lab for Reliability Physics and its Application Technology of Ministry of Information Industry, MII Electronics No.5 Research Institute, Guangzhou 510610)

Abstracts:  BaPbO₃ thick films ware prepared success fully on PZT substrates by the modified Sol-Gel method using Ba(OH) ₂·8H₂O and Pb (NO₃ ) ₂·3H₂O as raw materials and ethylene diamine tetraacetic acid , citric acid and tartaric acid as complex chelating agents . The micros tructure of the prepared BaPbO₃ thick films was investigated via SEM.The SEM micrographs suggest that the BaPbO₃ thick films are of high density and crack - free , and the grain size is 1 - 2μm. The sheet resistance of thick films decreased with the solid concentration of the additive . The effect of solid concentration disappeared with the increase in thickness resulting in the coincidence of electrical conductivity of films . The PZT with BaPbO₃ thick films have a good dielectric characteristic .

Key words:  BaPbO₃, thick films , Sol- Gel, spin coating, dielectric