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Fabrikasi Dan Karakterisasi Film Tipis Bahan Feroelektrik (0,3) Batio3-(0,7)Bazr0,5ti0,5o3 Didoping Dengan Logam Tantalum Dan Ekstrak Kulit Nanas Sebagai Kapasitor Keramik Multilayer (MLCC)
Ferroelectric materials are thin-film dielectric substances widely used in electronic devices such as sensors, capacitors, and memory due to their ease of modification and permanent properties. This study aims to synthesize and analyze thin films of (0.3)BaTiO₃-(0.7)BaZr₀.₅Ti₀.₅O₃ (BT-BZT) doped with pineapple peel extract and tantalum at concentrations of 0.5 wt%, 1.0 wt%, and 1.5 wt% for multilayer ceramic capacitor (MLCC) applications. The synthesis was carried out using the sol-gel method on Fluorine-doped Tin Oxide (FTO) substrates, followed by annealing at 700°C for 60 minutes. Characterization was performed using UV-Vis spectroscopy, XRD, FESEM-EDX, and impedance spectroscopy. The UV-Vis results showed that the optical absorption wavelength increased from 309 nm for BT-BZT0.5 to 310 nm for BT-BZT1.0, and 311 nm for BT-BZT1.5. The corresponding bandgap energies were 2.949 eV, 2.959 eV, and 2.967 eV. A crystalline structure was only observed in the BT-BZT0.5 sample with a tetragonal form measuring 0.627 nm, while the other samples were amorphous. Grain size increased with doping concentration, measured at 233.92 ± 55.05 nm for BT-BZT0.5, 262.81 ± 57.44 nm for BT-BZT1.0, and 350.22 ± 66.45 nm for BT-BZT1.5. The capacitance values at 2 kHz were 6488.46 F for BT-BZT0.5, 8632.36 F for BT-BZT1.0, and 9474.34 F
for BT-BZT1.5. The dielectric constants were 12322.31, 12343.25, and 12409.12, respectively. The dielectric loss values at 12 kHz were 0.009, 0.006, and 0.003 for BT-BZT0.5, BT-BZT1.0, and BT-BZT1.5, respectively.
Keywords: BT-BZT thin film, pineapple peel extract, sol-gel method, multilayer ceramic capacitor
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