Structural, optical, and dielectric study of hydrothermally synthesized barium-doped PbTiO3 (0 ≤ x ≤ 0.9) perovskite materials

This paper presents a comprehensive study on the synthesis, characterization, and analysis of the structural, optical, dielectric, and electrical properties of barium-doped lead titanate PbTiO 3 (PT) ceramics. The hydrothermal synthesis method was employed to fabricate the Ba-doped PbTiO 3 ceramics,...

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Published in:Applied physics. A, Materials science & processing Materials science & processing, 2023-12, Vol.129 (12), Article 858
Main Authors: Sakout, Y., Ghadraoui, O. El, Lahrar, E. H., Zouhairi, M., Tijani, N., Harrach, A., Lamcharfi, T., Haddad, M., Zouihri, H.
Format: Article
Language:English
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Summary:This paper presents a comprehensive study on the synthesis, characterization, and analysis of the structural, optical, dielectric, and electrical properties of barium-doped lead titanate PbTiO 3 (PT) ceramics. The hydrothermal synthesis method was employed to fabricate the Ba-doped PbTiO 3 ceramics, followed by sintering at 1000 °C for 4 h. X-ray diffraction analysis reveals a transition from a tetragonal to pseudo-cubic crystal structure with increasing barium concentration, accompanied by changes in lattice parameters. Raman spectroscopy confirms characteristic phonon modes of the tetragonal phase, with broadening and intensity changes indicating the presence of defects induced by barium doping. UV–Vis–NIR spectroscopy shows increased absorption in the ultraviolet region, suggesting modified optical properties. The band gap energy values also increase with barium content. Dielectric measurements demonstrate the impact of barium doping on the dielectric behavior, with higher dielectric constants observed for higher barium concentrations. The modified Uchino plots reveal parameters γ and δ, providing insights into the electrical properties and dielectric response. Overall, this study highlights the structural modifications, optical changes, and dielectric behavior induced by barium doping in PbTiO 3 ceramics.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-023-07130-x