Magnetic properties of fibrous Fe-Al-O prepared by electrospinning

18th International School on Condensed Matter Physics: "Challenges of Nanoscale Science: Theory, Materials, Applications"

Lovchinov, V.^1 ; Simeonova, P.^1 ; Vanderbemden, Ph^2 ; Krezhov, K.^3

Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., Sofia

1784, Bulgaria^1

University of Liège, S.U.P.R.A.T.E.C.S., Department of Electrical Engineering and Computer Science B28, Sart-Tilman, Belgium^2

Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tzarigradsko chaussee blvd, Sofia

1784, Bulgaria^3

关键词: Bulk materials;    Compound features;    Fibrous material;    Low temperatures;    Lower temperatures;    Magnetic transitions;    Multiferroic phase;    X-ray diffractograms;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/558/1/012053/pdf
DOI  :  10.1088/1742-6596/558/1/012053

来源: IOP

【 摘 要 】

Recently, we obtained a new Fe-Al-O fibrous material by applying the novel route of electrospinning. Here we report on the properties of the as prepared material established by PPMS magnetometry and X-ray diffraction. X-ray diffractograms revealed the coexistence of the orthorhombic multiferroic phase FeAlO3along with traces of unreacted impurities. The structure of the FeAlO3phase is described in the orthorhombic Pna21space group and is of great current interest since the compound features piezoelectricity, ferrimagnetism and magnetoelectric effects at low temperatures. In contrast to known bulk material obtained by classical routes the new fibrous material shows a lower value of saturation magnetization and the magnetic transition occurs at a much lower temperature. In the discussion an attempt is made to disclose the reasons for the observed differences.