Producing CaCu3Ti4O12 Doped Lanthanum (III) Acetate Hydrate Via Solid State Reactions

Ghazali, Haris Fahaza (2011) Producing CaCu3Ti4O12 Doped Lanthanum (III) Acetate Hydrate Via Solid State Reactions. Project Report. UTeM, Melaka. (Submitted)

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Abstract

The aim of the study and investigate the electroceramic ferroelectric material of CaCu3Ti4012 (CCTO) was prepared by doping the based material via solid state reaction techniques. The effect of thermal treatment (calcinations temperature, sintering temperature and time) doping concentrations in phase formation, microstructures and electrical (dielectric constant, dielectric loss and resistance) properties of La2/3CaCu3Ti4O12 (LCCTO) has been intensively study in this research. The conventional technique used in this experiment is covers preparation of raw material, mixing and ball milling, calcinations, pellet forming and sintering processes. This technique was chosen for this work to enable the calcinations and sintering processes in future carried out in shorter time and lower temperature, therefore it can be save time and energy. The optimum parameter to synthesized LCCTO via solid state technique are milling time for 12 hours, calcinations at 1200°C for 10 hour, and sintering at > 1100°C for 12 hours to prolonged the durations resulted in the segregation of Cu-rich phase. However, the effect doping with the Lanthanum (La) concentration on the dielectric constant CCTO simple simultaneous can exactly improved the dielectric properties of CCTO. Besides that, this sample is to determine the find out for the further study in La doping. Therefore, it can be concluded that by doping with certain amount of La, the electrical and dielectric properties of CCTO can be improved or maybe not depending on the parameters choose. The result expected get from the LCCTO produce is to have clearly uniform grain size with the highest dielectric constant value of Ɛr 33,210.

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