Magnetic Properties of Mechano-Thermally Processed Nanocrystalline MgFe2O4 Spinel Materials


This work highlights the results obtained from different characterizations for the Mg-based spinel ferrite, MgFe2O4 nanomaterials prepared by ball milling followed by annealing at different temperatures, 800 °C, 900 °C, 1000 °C, and 1100 °C each for 2 h. From XRD analysis, the structural data such as lattice parameter, average crystalline size, micro-strain, and dislocation density of different MgFe2O4 samples are obtained. While the produced as-milled powder revealed the majority of the peaks are cubic MgFe2O4 phase materials, the annealed samples yielded phase pure nanocrystalline cubic spinel MgFe2O4 materials. The photoluminescence (PL) intensity of emission peak seen at ~ 417 nm (λexcitation = 375 nm) for different nanocrystalline MgFe2O4 materials varies regardless of the annealing temperatures. The FT-IR results imply the intrinsic stretching vibrations of the Fe–O at the tetrahedral site for these spinel materials. A gradual increase of the saturation magnetization was observed for the present MgFe2O4 materials upon increasing the annealing temperature. These nanocrystalline MgFe2O4 materials may have potential applications in magnetic fluid (hyperthermia) and near-infrared (NIR) pigment applications.

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The author S. Balamurugan is grateful to DST-SERB, Government of India for the Research Grant (Sanction No. CS-108/2011) under the Fast Track-Young Scientist award scheme. The Pondicherry University, Central Instrumentation Facility is acknowledged for the room temperature field dependence magnetization VSM measurements. The SRM Institute of Science and Technology (formerly known as SRM University), Nanotechnology Research Centre (NRC), Chennai is acknowledged for microstructural features (FESEM-EDX). The DST-FIST (Ref. No.: SR/FST/ET-I/2017/87), Government of India is acknowledged for the powder XRD instrumentation (Model D2 Phaser Benchtop (BRUKER)) facility created at the Department of Nanotechnology, Noorul Islam Centre for Higher Education.

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Balamurugan, S., Ragasree, R., Brightlin, B.C. et al. Magnetic Properties of Mechano-Thermally Processed Nanocrystalline MgFe2O4 Spinel Materials. J Clust Sci (2021).

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  • MgFe2O4
  • Nanocrystalline
  • Magnetic-properties
  • Optical-properties
  • Morphology