Ali, H.T., Ramzan, M., Arshad, M.I. et al. (8 more authors) (2022) Tailoring the optical, and magnetic properties of La-BaM hexaferrites by Ni substitution. Chinese Physics B, 31 (2). 027502. ISSN 1674-1056
Abstract
The impact of Ni insertion on structural, optical, and magnetic properties of Ba0.8La0.2Fe12-xNixO19 hexaferrites (Ni substituted La-BaM hexaferrites) is investigated. The samples were prepared using the conventional co-precipitation method and sintered at 1000 oC for 4 hours to assist the crystallization process. The analysis of the structure of the samples was carried out using X-ray diffraction (XRD) spectrometer. The M-type hexagonal structure of all the samples was confirmed from the XRD spectra. The lattice parameters 'a' and 'c' are found in the range 5.8925 ±0.001 - 5.8952 ±0.001 nm and 23.2123 ±0.001 - 23.2219 ±0.001 nm, respectively. The M-type hexagonal nature of the prepared samples is also indicated by the presence of corresponding FT-IR bands and Raman modes in the FT-IR and Raman spectra, respectively. The EDX results confirmed the successful synthesis of the samples according to the required stoichiometric ratio. UV-vis spectrometer was used to record the absorption spectra of the prepared samples in the wavelength range 200 – 1100 nm. The optical energy band gap of the samples were found in the range 1.21 – 3.39 eV. The M-H loops of the samples were measured at room temperature in the applied magnetic field range 0 – 60 KOe. A high saturation magnetization of 99.92 emu/g was recorded in the sample with x = 0 and with microwave operating frequency 22.2 GHz. This high value of saturation magnetization is due to the substitution of La3+ ions at spin-up (12k, 2a, and 2b) sites. The Ni substitution is proved to be a potential candidate to tune the optical and magnetic parameters of M-type hexaferrites. Therefore, the prepared samples are suggested for applications in magneto-optic applications.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 Chinese Physical Society and IOP Publishing Ltd. This is an author-produced version of a paper subsequently published in Chinese Physics B. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/3.0/). |
Keywords: | M-type hexaferrite; Nanostructured materials; magnetic properties; optical properties |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 14 Jul 2021 15:37 |
Last Modified: | 14 Jul 2022 00:14 |
Status: | Published |
Publisher: | IOP Publishing |
Refereed: | Yes |
Identification Number: | 10.1088/1674-1056/ac1412 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:176199 |
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