Magnetic properties and hyperfine interactions of Co1-2xNixMnxFe2O4 nanoparticles

Date

2017-04-15

Author

Baykal, A.
Eryiğit, Sümeyra
TOPKAYA, RAMAZAN
GÜNGÜNEŞ, HAKAN
Amir, Md.
YILDIZ, AYLİN
Kurtan, U.
Shirsath, Sagar E.

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Col-2xNixMnxFe2O4 (0.0 <= x <= 0.5) nanoparticles (NPs) were prepared via citrate assisted microwave combustion route. XRD analysis confirmed the cubic structure (spinel) of all samples. Average crystallite size of products (obtained from (311) diffraction line) was in the range of 32.9-43.4 nm. The intense peak appearing at around 531 cm(-1) in FT-IR was attributed to the formation of a spinel ferrite. Magnetic properties of the products were investigated by room temperature vibrating sample magnetometer and Mossbauer spectroscopy. The magnetic parameters have been found to strongly depend on the Ni and Mn concentrations. The saturation magnetization continuously decreases with the increasing of the concentration (x). We found that Ni0.5Mn0.5Fe2O4 NP has superparamagnetic character at room temperature. This result was also verified by Mossbauer analysis. Scanning electron microscopic analysis revealed the cubic morphology of all products, EDX and elemental mapping analyses confirmed the expected composition of each product.

Subject Keywords

Magnetic nanomaterials, Superparamagnetism, Spinel, Hyperfine interactions

URI

https://hdl.handle.net/11511/30796

Journal

CERAMICS INTERNATIONAL

DOI

https://doi.org/10.1016/j.ceramint.2016.11.106

Collections

Graduate School of Social Sciences, Article

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Citation Formats

A. Baykal et al., “Magnetic properties and hyperfine interactions of Co1-2xNixMnxFe2O4 nanoparticles,” CERAMICS INTERNATIONAL, pp. 4746–4752, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30796.