Investigation of structural, magnetic, and electrical properties of Ru doped brownmillerite oxide: KBiFe 2 O 5
Materials Chemistry and Physics, ISSN: 0254-0584, Vol: 280, Page: 125812
2022
- 8Citations
- 6Captures
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Article Description
We studied and reported the Ruthenium (Ru) doped KBF (KBiFe 2 O 5 ) multiferroic nanoparticles on structurl, magneitc and electrical properites as a function of dopant and temperature, synthesized through coprecipitation route. X-ray Diffraction spectra of all the samples were indexed with orthorhombic structure (space group P 21am ) at room temperature and lattice constant decreased with Ru substition. The structural parameters including bond lengths and angles were refined using a standard Rietveld program. Average crystallite measured from schereer method increases with increasing annelaing temperature. Morphology from TEM confirms control over uniform distribution of particle size and shape. Zero field-cooled (ZFC)-Field-Cooled (FC) magnetic measurements reveals superparamagnetic behaviour above room temperature. Magnetic hysteresis loops (M − H) measured at 5 K and 300 K shows improvement with Ru substitution. An insginificant decrease in optical band gap 2.35 to 2.23 eV observed from UV–Vis spectroscopy with Ru substitution. Ferroelectric loops resembling lossy dielectric nature of unpoled samples. Activation energy estimated from DC electrical resistivity was found to be 0.6 eV. Room temperature Dielectric data revelas Maxwell-Wanger type dielectric dispersion and analyzed based on the intrinsic and extrinsic parameters.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0254058422001183; http://dx.doi.org/10.1016/j.matchemphys.2022.125812; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85124177049&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0254058422001183; https://dx.doi.org/10.1016/j.matchemphys.2022.125812
Elsevier BV
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