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Structural, Magnetic, and Dielectric Properties of Conventional- and Microwave-Sintered Ni0.6Zn0.4−xCu x Fe2O4

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Abstract

In the present work, structural, magnetic, and dielectric properties of conventional- and microwave-sintered Ni0.6Zn0.4-xCu x Fe2 O 4 (x = 0.0 to 0.4 in steps of 0.1) are studied. X-ray diffraction measurements confirm the formation of a single spinel phase. Crystallite size estimated from Scherrer’s method found between 30–41 nm and 36–28.5 nm in conventional- and microwave-sintered samples respectively. The lattice constant decreases with Cu substitution, suggesting the incorporation of Cu into the spinel lattice. SEM images reveal that microwave sintering results in larger grains with intragranular pores. Saturation magnetization was found to decrease with Cu content. Cation distribution estimated from the magnetization data supports the observed changes in magnetic parameters. A significant influence on microstructure and cation redistribution on dielectric properties are observed for microwave-sintered samples.

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Acknowledgements

The authors would like to thank the referee for comments which helped in improving the quality of the paper.

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Authors and Affiliations

  1. Department of Physics, Nalla Narasimha Reddy Engineering College, Hyderabad, 500 088, India

    E. Chandra Sekhar

  2. Department of Physics, GVP College of Engineering for Women, Visakhapatnam, 530 048, India

    B. Rajesh Babu

  3. Department of Electronics and Physics, GITAM Institute of Science, GITAM University, Rushikonda, Visakhapatnam, 530 045, India

    K. V. Ramesh

  4. Department of Science and Humanities, VFSTR University, Vadlamudi, Guntur, 522 313, India

    E. Chandra Sekhar & M. Sreenivasulu

  5. Centre for Materials for Electronics Technology, HCL (PO), Cherlapally, Hyderabad, 500 051, India

    Y. Purushotham

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  1. E. Chandra Sekhar
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Correspondence to E. Chandra Sekhar.

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Sekhar, E.C., Babu, B.R., Ramesh, K.V. et al. Structural, Magnetic, and Dielectric Properties of Conventional- and Microwave-Sintered Ni0.6Zn0.4−xCu x Fe2O4 . J Supercond Nov Magn 31, 1199–1207 (2018). https://doi.org/10.1007/s10948-017-4264-5

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  • DOI: https://doi.org/10.1007/s10948-017-4264-5

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