Journal of Physics: Theories and Applications
Vol 10, No 1 (2026): Journal of Physics: Theories and Applications

Improvement of microstructures and dielectric properties of coprecipitation iron (Fe)-doped barium titanate

Muazaroh Nur Azizah (Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, Surakarta 57126, Indonesia)
Dianisa Khoirum Sandi (Study Program of Energy Conversion Engineering, Department of Mechanical Engineering, Politeknik Negeri Semarang, Semarang 50275, Indonesia)
Khairuddin Khairuddin (Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, Surakarta 57126, Indonesia)
Fahru Nurosyid (Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, Surakarta 57126, Indonesia)
Trya Andini (Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, Surakarta 57126, Indonesia)
Yofentina Iriani ((SCOPUS ID: 35173120500), Physics Department, Universitas Sebelas Maret,)



Article Info

Publish Date
31 Mar 2026

Abstract

Barium titanate (BaTiO3 or BTO) is a famous lead-free ferroelectric material often studied due to its fascinating features for technological applications. However, its performance requires continuous enhancement, one approach being doping with iron (Fe). This study aimed to demonstrate the improvement in the microstructures and dielectric properties of barium titanate induced by iron doping. The barium titanate and iron-doped barium titanate with the formula of BaTi1-xFexO3 (x = 0, 0.01, 0.03, and 0.05) were synthesized using the coprecipitation technique. X-ray diffraction (XRD) analysis confirmed the formation of a pure tetragonal phase in all samples, while Fourier-transform infrared (FTIR) spectroscopy revealed characteristic BTO absorption bands at around 500 cm−1. Compared with pure BTO, Fe-doped samples exhibited increased lattice constants, crystallite sizes, densities, and dielectric constants. Further, the dielectric constants of the samples were also higher than those of undoped barium titanate. These results indicate that Fe doping enhances the microstructures of BTO, leading to improved dielectric performance.

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Journal Info

Abbrev

jphystheor-appl

Publisher

Subject

Education Materials Science & Nanotechnology Physics

Description

Journal of Physics: Theories and Applications (cited as J. Phys.: Theor. Appl.) is a peer-reviewed and open access journal, which is published twice a year by Physics Department, Sebelas Maret University. The journal is designed to serve researchers, developers, professionals, graduate students and ...