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- Title
Regulation of multiferroicity in BiFe<sub>1−x</sub>Cr<sub>x</sub>O<sub>3</sub> thin films fabricated employing sol–gel process.
- Authors
Long, Lili; Guo, Kaixin; Huang, Junhua; Zhang, Min; Deng, Chaoyong; Wang, Xu
- Abstract
BiFeO3, a typical single-phase multiferroic material, has received extensive attention due to its rich physical properties and broad application prospects in the field of multifunctional devices. In this work, impacts of transition metal Cr ion doping on the structure, morphology, multiferroicity, and bandgap of BiFeO3 thin films deposited on Pt(111)/Ti/SiO2/Si(100) and fluorine-doped tin oxide/glass substrates by a sol–gel process were investigated. The results indicate that such a BFCO thin film presents excellent physical, chemical properties and good stability. XRD patterns confirm that the pristine BiFeO3 and BiFe1−xCrxO3 (x = 0.00, 0.03, 0.06, and 0.09) matched well with the perovskite structure. Micro-morphologies indicate that the introduction of Cr ions improved efficiently the quality of the thin films. The optical measurement shows that the fundamental absorption edges of Cr-doped BiFeO3 exhibit a redshift with the increase of Cr amount, and the optical bandgaps decrease from 2.3 to 2.1 eV. The study of magnetic characterization shows that the magnetization was improved by the introduction of Cr, illustrating that BFCO thin films can be better applied in modern high-performance photovoltaic and memory devices.
- Subjects
SOL-gel processes; THIN films; TRANSITION metal ions; CHEMICAL properties; MULTIFERROIC materials; IONIC structure
- Publication
Journal of Materials Science: Materials in Electronics, 2022, Vol 33, Issue 14, p11308
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-022-08104-0