TY - JOUR
T1 - Effect of bimetallic (Ca, Mg) substitution on magneto-optical properties of NiFe2O4 nanoparticles
AU - Slimani, Yassine
AU - Almessiere, M. A.
AU - Nawaz, M.
AU - Baykal, A.
AU - Akhtar, S.
AU - Ercan, I
AU - Belenli, I
N1 - KAUST Repository Item: Exported on 2022-06-07
Acknowledgements: 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.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
PY - 2019/2/5
Y1 - 2019/2/5
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/678662
UR - https://linkinghub.elsevier.com/retrieve/pii/S0272884218334564
UR - http://www.scopus.com/inward/record.url?scp=85058781108&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2018.12.072
DO - 10.1016/j.ceramint.2018.12.072
M3 - Article
SN - 1873-3956
VL - 45
SP - 6021
EP - 6029
JO - CERAMICS INTERNATIONAL
JF - CERAMICS INTERNATIONAL
IS - 5
ER -