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    Effect of bimetallic (Ca, Mg) substitution on magneto-optical properties of NiFe2O4 nanoparticles

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    Type
    Article
    Authors
    Slimani, Yassine cc
    Almessiere, M. A.
    Nawaz, M.
    Baykal, A.
    Akhtar, S. cc
    Ercan, I
    Belenli, I
    Date
    2019-02-05
    Permanent link to this record
    http://hdl.handle.net/10754/678662
    
    Metadata
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    Abstract
    Nanoparticles (NPs) of calcium and magnesium co-substituted nickel ferrite with the chemical composition CaxMgxNi1–2×Fe2O4 (0.00 ≤ x ≤ 0.05) NPs were prepared hydrothermally. The (Ca, Mg) co-substitution effect on morphological, structural, optical and magnetic properties of NiFe2O4 NPs was analyzed via FT-IR, XRD, TEM, SEM, DRS and VSM techniques. The magnetization of CaxMgxNi1–2×Fe2O4 (0.00 ≤ x ≤ 0.05) NPs were examined and analyzed at room temperature (300 K; RT) and low temperature (10 K). The specific magnetic parameters such as saturation magnetization Ms, remanence Mr, coercivity Hc, squareness ratio (SQR=Mr/Ms) and magnetic moment nB of Ni1–2×MgxCaxFe2O4 (0.00 ≤ x ≤ 0.05) NPs were determined and evaluated. The M(H) curves exhibit superparamagnetic behavior at RT and ferrimagnetic nature at 10 K. The substitution significantly changes the magnetizations and coercivity data. An increase in the Ms, Mr, Hc and nB values was observed in substituted products compared to pristine one. The highest values were obtained for x = 0.05 product. The SQR values are found to be below than 0.5, which can be attributed to surface spin disorder effects. The obtained magnetic results are primarily derived from the substitution with Mg and Ca that will strengthen the super exchange interactions.
    Citation
    Slimani, Y., Almessiere, M. A., Nawaz, M., Baykal, A., Akhtar, S., Ercan, I., & Belenli, I. (2019). Effect of bimetallic (Ca, Mg) substitution on magneto-optical properties of NiFe2O4 nanoparticles. Ceramics International, 45(5), 6021–6029. doi:10.1016/j.ceramint.2018.12.072
    Sponsors
    Financial supports from Institute for Research & Medical Consultations (IRMC) of Imam Abdulrahman Bin Faisal University (IAU – Saudi Arabia, Dammam) are greatly acknowledged [Grant no. 2018-IRMC-S-1]. The Core Labs of King Abdullah University of Science and Technology (KAUST) are greatly acknowledged for their technical assistance.
    Publisher
    Elsevier BV
    Journal
    CERAMICS INTERNATIONAL
    DOI
    10.1016/j.ceramint.2018.12.072
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0272884218334564
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.ceramint.2018.12.072
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