Cation distribution in Cr3+ doped Ni0.3Co0.2Zn0.5Fe2?xCrxO4 nanoferrites (0.0 ≤ x ≤ 0.1)): Structural, magnetic and impedance spectroscopic studies

Rafique, T., Atif, M., Nadeem, M., Meydan, T. ORCID: https://orcid.org/0000-0002-4608-0507, Cuenca, J. ORCID: https://orcid.org/0000-0003-1370-1167, Khalid, W. and Ali, Z. 2023. Cation distribution in Cr3+ doped Ni0.3Co0.2Zn0.5Fe2?xCrxO4 nanoferrites (0.0 ≤ x ≤ 0.1)): Structural, magnetic and impedance spectroscopic studies. Physica B: Condensed Matter 648 , 414413. 10.1016/j.physb.2022.414413

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Abstract

Chromium-doped (0.0 ≤ x ≤ 0.1) nanoferrites were synthesized via the sol-gel technique. X-ray diffraction and Raman spectroscopy analysis revealed the development of a single phase cubic spinel structure with a space group . The saturation magnetization () decreased as content increased except at x = 0.075, where an abrupt increase in is seen due to the cation redistributions among the tetrahedral and octahedral sites. Impedance spectroscopy was employed to investigate the impact of cation distribution on the dielectric and resistive characteristics. The prepared samples exhibited significantly higher resistance values (108–1010 Ω) and lower dielectric tangent loss (<0.1), which can be attributed to changes in the morphology and mobility of charge carriers associated with the cation distribution caused by doping. Based on the results, the composition with x = 0.075 could be used in high-frequency applications where we need high conductivity, low losses, and moderate magnetization.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering Physics and Astronomy
Publisher:	Elsevier
ISSN:	0921-4526
Date of Acceptance:	9 October 2022
Last Modified:	31 Oct 2022 14:15
URI:	https://orca.cardiff.ac.uk/id/eprint/153823

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