Microstructure, Morphology, and Dielectric Properties of Ba 1-x La x TiO 3 with Variation Mole Concentration of Lanthanum by Co-Precipitation Method

Abstract

This study aims to determine the microstructure, morphology, and dielectric properties of Ba 1-x La x TiO 3 modified with variations moles concentration of 10% and 15% Lanthanum at sintering temperatures of 1300°C and 1400°C for 4 hours. Ba 1-x La x TiO 3 was synthesized using the co-precipitation method. The results of characterization using X-Ray Diffraction (XRD) showed that the greater concentration of La mole caused a diffraction angle shift to the right. The crystallite size decrease asthe increasing concentration of La mole and sintering temperature. The smallest crystallite size (36.63 nm) belong to a sample of Ba 0,85 La 0,15 TiO 3 sintered at 1400°C. The intensity and the crystallinity decreased with increasing concentration of La mole. Scanning Electron Microscopy (SEM) photographs showed that grain size got smaller with increasing La mole concentration. The dielectric constant obtained from the results of characterization using a Resistance Inductance Capacitance meter (RLC meter) showed that the higher the concentration of La mole added, the greater the dielectric constant produced. The highest dielectric constant was 414 belonged to the sample Ba 0,85 La 0,15 TiO 3 sintered at 1400°C.