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Effect of Gd Doping on the Structural and Magnetic Properties of Ni-Cu-Zn-Fe2O4

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Abstract

Ni0.5Cu0.25Zn0.25GdxFe2-xO4 (x = 0.0, 0.025, 0.05, 0.075, 0.1) ferrites were synthesized using an oxalic-based precursor method. A single phase Ni-Cu-Zn-Gd ferrite was observed from X-ray diffraction (XRD) data except for higher Gd content. For x = 0.1, a secondary phase due GdFe2O3 was observed. The particle size was observed to decrease and the lattice constant to increase with increasing Gd doping concentration. The IR spectra confirmed the existence of bands corresponding to spinel ferrites. The IR band positions were observed to shift towards higher positions with increasing Gd doping concentration. The saturation magnetization, coercivity and remanence magnetization were observed to increase as a result of Gd doping. The substitution of Gd ions in the place of Fe ions resulted in changes in the structural and magnetic properties due to replacement of smaller ionic radii Fe ions by larger ionic radii Gd ions.

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Acknowledgements

The authors thank the Sophisticated Analytical Instrumentation Facility (SAIF), Indian Institute of Technology (IIT) Madras, for measurements. P. V. Srinivasa Rao thanks University Grants Commission (UGC), government of India, for granting a scholarship under the Faculty Development Program (FDP).

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Authors and Affiliations

  1. Department of Physics, Acharya Nagarjuna University, Guntur, Andhra Pradesh, 522510, India

    P. Venkata Srinivasa Rao & M. Rami Reddy

  2. Department of Physics, SS&N College, Narasaraopet, Guntur, Andhra Pradesh, 522601, India

    P. Venkata Srinivasa Rao

  3. Department of Physics, Narasaraopeta Engineering College, Narasaraopeta, Andhra Pradesh, 522601, India

    T. Anjaneyulu

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  1. P. Venkata Srinivasa Rao
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  2. T. Anjaneyulu
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  3. M. Rami Reddy
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Correspondence to P. Venkata Srinivasa Rao.

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Rao, P.V.S., Anjaneyulu, T. & Reddy, M.R. Effect of Gd Doping on the Structural and Magnetic Properties of Ni-Cu-Zn-Fe2O4. J. Korean Phys. Soc. 75, 304–308 (2019). https://doi.org/10.3938/jkps.75.304

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  • DOI: https://doi.org/10.3938/jkps.75.304

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