STUDY OF THE DIELECTRIC AND MICROSTRUCTURE PROPERTIES OF (1-x) CaCu3TI4O12 _ (x) PbZr0.65Ti0.35O3 COMPOSITE

International Conference on Renewable Energies and Energy Efficiency 2017

Hadi, N.^1 ; Lamcharfi, T.^1 ; Abdi, F.^1 ; Echatoui, N.S.^1 ; Ahjyaje, F.Z.^2 ; Harrach, A.^3 ; Chouikh, S.^1

Laboratory of Signals, Systems and Components, USMBA, FST Fez, B.P. 2202, Morocco^1

Laboratory of Materials Natural Substances, Environment and Modeling, LMSNEM, USMBA, FP-Taza, Morocco^2

Laboratory of Condensed Matter Chemistry, USMBA. FST-Fes, B.P. 2202, Morocco^3

关键词: Calcium copper titanates;    Conduction process;    Dielectric measurements;    Frequency dependence;    High temperature solid-state reaction;    Microstructure properties;    Scanning electron micrographs;    Temperature dependence;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/161/1/012020/pdf
DOI  :  10.1088/1755-1315/161/1/012020

来源: IOP

【 摘 要 】

In this paper, structural, dielectric and electrical properties of calcium copper titanate and PbZr0.65Ti0.35O3ceramic composite with composition (1-x) CaCu3Ti4O12- (x) PbZr0.65Ti0.35O3(where x = 0.00, 0.30, 0.50, 0.70 and 1.00) has been distinguished. The CaCu3Ti4O12sample was prepared by employing a high temperature solid state reaction technique and PbZr0.65Ti0.35O3synthesized by sol-gel route. X-ray diffraction (XRD), scanning electron micrograph (SEM), FT-IR spectrum (IR) was used to reach the structural properties of the studied compounds. The XRD and IR studies confirm the formation of pure phase for x = 0.00 and 1.00 concentrations i.e cubic and tetragonal, respectively. The SEM show change in the grain distribution, size and shape at addition of PbZr0.65Ti0.35O3. Dielectric measurements were made by using an impedance analyzer, the results show that the dielectric constant of the CCTO/PZT composite is greater than that of pure CCTO and than that of pure PZT. The temperature dependence of the ac conductivity indicated that the conduction process is due to singly and doubly ionized, and frequency dependence of the ac conductivity of composites follows Jonscher's power law.