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- W4313397044 abstract "ABSTRACTABSTRACTThe structural, magnetic and calorimetric properties of Fe2.4Ga0.6O4 nanoferrite have been investigated. X-ray and neutron diffraction coupled analyses using Rietveld refinements have shown that the samples under investigation, obtained by different bottom-up methods, crystalize with a cubic structure in the Fd3¯m space group (N° 227). The Ga3+ ions preferentially occupying the tetrahedral sublattice of the inverse spinel partly screen the dipole–dipole interactions and lead to the reduction of the magnetic response of Fe3+ ones. Calorimetric measurements confirm that the nanosized Fe2.4Ga0.6O4 system weakly agglomerates and simultaneously collect and release optimal amount of heat under the influence of an alternating magnetic field with the 15.3 kA/m of maximum magnetic field strength and 532 kHz of frequency. The values of the specific absorption coefficients obtained for gallium ferrites, similar to those typical for cobalt ferrites used commercially in biomedicine, together with very low superparamagnetic blocking temperature validated by Mössbauer spectroscopy analysis, make the system an attractive therapeutic material.KEYWORDS: Magnetic nanoparticlesgallium ferriteX-ray diffractionneutron diffractionMössbauer spectroscopycalorimetric measurements AcknowledgementsWe are grateful to Karolina Sidorczuk from Faculty of Physics of the University of Bialystok for creation of the program to visualize crystal ordering of spinel-type structure. This work was partially supported by the National Science Centre (grant OPUS no 2018/31/B/ST3/00279).Disclosure statementNo potential conflict of interest was reported by the author(s)." @default.
- W4313397044 created "2023-01-06" @default.
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- W4313397044 date "2022-12-31" @default.
- W4313397044 modified "2023-10-16" @default.
- W4313397044 title "Investigations on the enhancement of thermomagnetic properties in Fe<sub>2.4</sub>Ga<sub>0.6</sub>O<sub>4</sub>" @default.
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- W4313397044 doi "https://doi.org/10.1080/01411594.2022.2159404" @default.
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