Exploration of the structural, physical and antimicrobial properties of aluminium-doped nickel-strontium ferrite nanoparticles synthesised by the sol–gel route

Using the sol–gel auto-combustion method to synthesise aluminium-doped nickel-strontium ferrite nanoparticles makes a thermally stable material with a yield of 69.4%. The optical band gap of the material ranges from 3.62 to 3.75 eV, with maximum absorption at 302.57 nm. The X-ray diffraction reveals...

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Veröffentlicht in:Applied physics. A, Materials science & processing Materials science & processing, 2024-10, Vol.130 (10), Article 683
Hauptverfasser: Bhore, Rajkanya M., Tigote, Radhakrishnan M., Kazi, Subiya K., Chavan, Sanjay R., Khobragade, Rahul M., Puri, Gulab M., Tiwari, Girdharilal B.
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Sprache:eng
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Zusammenfassung:Using the sol–gel auto-combustion method to synthesise aluminium-doped nickel-strontium ferrite nanoparticles makes a thermally stable material with a yield of 69.4%. The optical band gap of the material ranges from 3.62 to 3.75 eV, with maximum absorption at 302.57 nm. The X-ray diffraction reveals that the average particle size ranges between 18 and 25 nm with the FCC crystal structure, as confirmed by high-resolution transmission electron microscopy. The presence of all elements was validated by energy dispersive X-ray spectroscopy. The paramagnetic behaviour was revealed by a vibrating sample magnetometer. The total surface area ranges from 8.00 to 24 m 2 g −1 . At P/Po (0.99), the total pore volume ranges from 0.011 to 0.037 cm 3 g −1 . The average pore diameter ranges from 5.44 nm to 6.49 nm and shows isotherm type III with an H 3 hysteresis loop. A dielectric study revealed that ε’ and tan δ decreased with Al 3+ , Sr 2+  and Ni 2+ ions doping lower dielectric loss and dielectric constant. These nanoparticles execute antimicrobial activity against Gram-positive and Gram-negative microorganisms as well as against fungal pathogens.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-024-07842-8