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MICROSTRUCTURE, MORPHOLOGY, AND DIELECTRIC PROPERTIES Ba1-xLaxTiO3 WITH VARIATION MOLE CONCENTRATION OF LANTHANUM BY CO-PRECIPITATION METHOD

Uli Ulfa, Yofentina Iriani, Kusumandari

This study aims to determine the microstructure, morphology, and dielectric properties of Ba1-xLaxTiO3 modified with variations moles concentration of 10% and 15% Lanthanum at sintering temperatures of 1300oC and 1400oC for 4 hours. Ba1-xLaxTiO3 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 as the increasing concentration of La mole and sintering temperature. The smallest crystallite size (36.63) belong to a sample of Ba0,85La0,15TiO3 sintered at 1400oC. 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 Ba0,85La0,15TiO3 sintered at 1400oC.

Corresponding Author : Dr. Yofentina Iriani, S.Si, M.Si
Email : [email protected]

https://icimece2020.ft.uns.ac.id/