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Investigation of magnetic, dielectric and optical properties of BiFe0.5Mn0.5O3 multiferroic ceramic.

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Title: Investigation of magnetic, dielectric and optical properties of BiFe0.5Mn0.5O3 multiferroic ceramic.
Authors: Gadhoumi, F.1 (AUTHOR) fatengadhoumi@gmail.com, Kallel, I.1 (AUTHOR), Benzarti, Z.1 (AUTHOR), Abdelmoula, N.1 (AUTHOR), Hamedoun, M.2 (AUTHOR), Elmoussaoui, H.2 (AUTHOR), Mezzane, D.3 (AUTHOR), Khemakhem, H.1 (AUTHOR)
Source: Chemical Physics Letters. Aug2020, Vol. 753, pN.PAG-N.PAG. 1p.
Subjects: Band gaps, Optical properties, Magnetic measurements, Rietveld refinement, X-ray diffraction
Abstract: • Synthesis of BiFe 0.5 Mn 0.5 O 3 multiferroic ceramic using conventional solid state method. Enhanced multi-functional properties are funded. • Narrow optical band gap of 1.86 eV (BiFe 0.5 Mn 0.5 O 3) was obtained compared to 2.44 eV (BiFeO 3). • Magnetic and dielectric properties have been improved in BiFe 0.5 Mn 0.5 O 3. Multiferroic BiFeO 3 (BFO) and BiFe 0.5 Mn 0.5 O 3 (BFMO) ceramics have been elaborated using conventional solid state method. X-ray diffraction with Rietveld refinement revealed the existence of rhombohedrally R3c symmetry in BFMO with traces of secondary phase and decrease in structural parameters. From the optical and dielectric study, narrower band gap and a significant increase in the dielectric permittivity was shown in BFMO, compared to BFO. Magnetic measurement at room temperature of BFMO showed weak ferromagnetic hysteresis behavior. Also, a significant increase of magnetization has been detected with Mn ion substitution. These findings encourage a further thorough investigation of the prepared (BFMO) ceramic for enhancing multifunctional applications. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:• Synthesis of BiFe 0.5 Mn 0.5 O 3 multiferroic ceramic using conventional solid state method. Enhanced multi-functional properties are funded. • Narrow optical band gap of 1.86 eV (BiFe 0.5 Mn 0.5 O 3) was obtained compared to 2.44 eV (BiFeO 3). • Magnetic and dielectric properties have been improved in BiFe 0.5 Mn 0.5 O 3. Multiferroic BiFeO 3 (BFO) and BiFe 0.5 Mn 0.5 O 3 (BFMO) ceramics have been elaborated using conventional solid state method. X-ray diffraction with Rietveld refinement revealed the existence of rhombohedrally R3c symmetry in BFMO with traces of secondary phase and decrease in structural parameters. From the optical and dielectric study, narrower band gap and a significant increase in the dielectric permittivity was shown in BFMO, compared to BFO. Magnetic measurement at room temperature of BFMO showed weak ferromagnetic hysteresis behavior. Also, a significant increase of magnetization has been detected with Mn ion substitution. These findings encourage a further thorough investigation of the prepared (BFMO) ceramic for enhancing multifunctional applications. [ABSTRACT FROM AUTHOR]
ISSN:00092614
DOI:10.1016/j.cplett.2020.137569