FABRICATION AND CHARACTERIZATION OF STRONTIUM DOPED CALCIUM TITANATE THIN FILMS
Abstract
- Strontium doped calcium titanate, Ca1-xSrxTiO3 (x = 0.1, 0.2, 0.3, 0.4) thin films deposited onto silicon substrates were prepared by sol-gel method and heated at 700°C for 1 hr. The sol-gel method offers numerous advantages such as good homogeneity of the powders and low processing temperature. Microstructural observation of the Ca1-xSrxTiO3 thin films was investigated from scanning electron microscopy (SEM) images and it was found that the grain sizes varied with increase in concentration of strontium. The structural identification with different dopant concentrations of the films examined using X-ray diffraction (XRD) analysis showed the complete crystallization in the perovskite structure. Capacitance-voltage (C-V) measurements were carried out by using a LCR meter for various frequencies (0.1 kHz to 100 kHz) and the values of dielectric constant for all the films were also determined.
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Year
- 2020
Author
-
Hnin Yu Wai
Subject
- Physics
Publisher
- Myanmar Academy of Arts and Science (MAAS)