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Synthesis and characterization of spinel ferrites for microwave devices

  • Original Paper: Nano-structured materials (particles, fibers, colloids, composites, etc.)
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Abstract

The prepared ferrite system with chemical formula Mg0.6Li0.4YbxFe2−xO4; x = 0.00 and 0.1 having valuable magnetic and electrical properties. The X-ray diffraction data confirmed the cubic spinel structure with single phase. The one order increase in magnitude of dc resistivity was found with ‘Yb’ substitution as compared to Mg–Li based ferrites. The room temperature dielectric loss under the frequency of 3 GHz was 3 × 10−3. By using better stoichiometric ratio, size and the nature of substituted element, one can achieve suitable combination of low dielectric loss and high resistivity. In present work, the dielectric study (as a function of frequency) was done in frequency range of 0.1–20 MHz at different temperatures. The magnetic properties were measured up to applied field of 2 KOe. The low values of dielectric loss and high value of dc resistivity suggested that prepared samples may be suitable for microwave devices.

Highlights

  • The single phase spinel ferrite having formula Mg0.6Li0.4YbxFe2−xO4; x = 0.00 and 0.1 prepared by conventional ceramic technique.

  • The average size of particle was measured by using FWHM of intense peak (311) and using Scherer equation.

  • The decrease in dc resistivity with upturn of temperature confirmed semiconductor nature prepared sample.

  • This material may be used microwave devices due to their low dielectric loss and dielectric constant.

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Acknowledgements

This research project was supported by a grant from the Research Centre of the Centre for Female Scientific and Medical Colleges, Deanship of Scientific Research, King Saud University.

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Authors and Affiliations

  1. Department of Physics and Astronomy, King Saud University, Riyadh, 11451, Saudi Arabia

    Rabia Qindeel & Eman A. Alghamdi

  2. Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia

    Norah H. Alonizan

  3. King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, 11451, Saudi Arabia

    Manal A. Awad

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  1. Rabia Qindeel
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  2. Norah H. Alonizan
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  3. Eman A. Alghamdi
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Correspondence to Rabia Qindeel.

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Qindeel, R., Alonizan, N.H., Alghamdi, E.A. et al. Synthesis and characterization of spinel ferrites for microwave devices. J Sol-Gel Sci Technol 97, 593–599 (2021). https://doi.org/10.1007/s10971-021-05470-9

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  • DOI: https://doi.org/10.1007/s10971-021-05470-9

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