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Investigation of the microstructural and optical properties of Co doped ErFeO3 thin films synthesized via sol-gel method


Citation

Baqiah, Hussein and Zhang, Na and Awang Kechik, Mohd Mustafa and Pasupuleti, Jagadeesh and Al-Asbahi, Bandar Ali and Al-Hada, Naif Mohammed and Yang, Jianlei and Li, Qiang and Xu, Shicai (2025) Investigation of the microstructural and optical properties of Co doped ErFeO3 thin films synthesized via sol-gel method. Physica B: Condensed Matter, 706. art. no. 417129. pp. 1-8. ISSN 0921-4526

Abstract

In this paper, the impacts of chemical doping with Co ions on the microstructural, electronic and optical properties of sol-gel synthesized ErFe1-xCoxO3 thin films, where x = 0.0, 0.05, 0.1 and 0.2, were investigated. The films exhibited high crystalline orthorhombic ErFeO3 phase and showed gradual reduction of lattice parameters with Co doping. Porous microstructure was observed at x = 0.1 and 0.2. The Co ions existed in a mixed valence of Co+2 and Co3+ ions. The energy band gap (Eg) decreased from 2.79 eV for film x = 0.0–2.59 eV for film x = 0.2. The absorption coefficient reduced with Co doping in the range of 3.8–6.0 eV, however, it increased and red shifted at E < 3.8 eV. Both real refractive index and dielectric constant increased for film x = 0.05 at E > 4 eV and then decreased with further increasing of Co doping.


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Additional Metadata

Item Type: Article
Subject: Electronic, Optical and Magnetic Materials
Subject: Condensed Matter Physics
Subject: Electrical and Electronic Engineering
Divisions: Faculty of Science
DOI Number: https://doi.org/10.1016/j.physb.2025.417129
Publisher: Elsevier
Keywords: Co doping; Dielectric constant; Energy band gap; ErFeO3 thin film; Refractive index; Sol-gel method
Sustainable Development Goals (SDGs): SDG 9: Industry, Innovation and Infrastructure, SDG 12: Responsible Consumption and Production, SDG 7: Affordable and Clean Energy
Depositing User: Ms. Nur Faseha Mohd Kadim
Date Deposited: 07 May 2026 00:37
Last Modified: 07 May 2026 00:37
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.physb.2025.417129
URI: http://psasir.upm.edu.my/id/eprint/124431
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