Tuning magnetic properties of BiFeO3 thin films by controlling Mn doping concentration
Source abstract
Abstract
Abstract Mn-doped BiFeO 3 (BiFe 1–x Mn x O 3 , x = 0, 0.03, 0.05, 0.10, 0.15 and 0.20) polycrystalline multiferroic thin films were successfully synthesized using the facile sol-gel spin-coating method. The crystal structures, surface features, elements valences, and magnetic properties of as-prepared samples were systematically explored. X-ray diffraction and Raman spectroscopy studies revealed the substitutions of Mn into the Fe site and a rhombohedral-to-orthorhombic phase transition. The Field Emission Scanning Electron Microscopy showed a decrease in the average particle sizes and an improvement of surface morphology with increasing the concentration of the substitutes. Energy-dispersive X-ray spectroscopy confirmed the doping concentration of Mn 2+ in the samples. X-ray photoelectron spectroscopy indicated the co-existence of Mn 2+ /Mn 3+ ions in the doped films. The remnant magnetization value of BiFe 0.90 Mn 0.10 O 3 thin film was found to be approximately six times than that of pure BiFeO 3 thin film under a magnetic field of 10 kOe. The enhanced magnetic property of BiFe 0.90 Mn 0.10 O 3 thin film was mainly ascribed to the structural distortion of spin cycloid and the enhancement of super-exchange interaction between the Fe 3+ (Mn 2+ ) and O 2- ions.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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