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Journal of Superconductivity and Novel Magnetism

, Volume 27, Issue 8, pp 1903–1910 | Cite as

Trends of Parallel Microstructure and Magnetic Properties Evolution in Co0.5Zn0.5Fe2O4

  • Muhammad Misbah Muhammad Zulkimi
  • Mansor Hashim
  • Ismayadi Ismail
  • Raba’ah Syahidah Azis
  • Samikanu Kanagesan
  • Muhammad Syazwan Mustaffa
  • Mohd Khairul Ikhwan Mohd Zawawi
Original Paper

Abstract

The present paper reports on an effort to expose and scientifically explain the microstructure–magnetic properties relationship as they evolve with increasing sintering temperature. Mechanical alloying was used to prepare cobalt–zinc ferrite nanoparticles with sintering temperature from 800 to 1,350 °C with 50 °C increment. The microstructure of the samples was observed using a field emission scanning electron microscope, and the magnetic parameters, such as the real permeability and loss factor, were measured at room temperature in the frequency range from 10 MHz to 1.0 GHz using an Agilent 4291B impedance/material analyzer. The B–H hysteresis of the samples was investigated using a MATS-2010SD Static Hysteresisgraph. From the results, the real permeability and loss factor were observed to increase up to 1,250 °C. These increases corresponded to increases in grain size and are mainly due to easier domain wall movement. However, due to zinc loss, \(\mu ^{\prime }\) and \(\mu ^{\prime \prime }\) as well as the saturation induction decreased from 1,300 to 1,350 °C. The coercivity increased up to 850 °C and decreased with increasing temperature. This increasing-to-decreasing coercivity trend corresponded well with the single- to multi-domain grain size transition marked by critical grain size at about 0.13 μm.

Keywords

Magnetic properties Microstructure Mechanical alloying Spinel 

Notes

Acknowledgments

The researchers wish to thank the Universiti Putra Malaysia, Malaysia, for providing a grant under the graduate research fellowship and MNPEG (Magnetics and Nanostructure Polycrystal Evolution Group) for supporting this project.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Muhammad Misbah Muhammad Zulkimi
    • 1
  • Mansor Hashim
    • 1
  • Ismayadi Ismail
    • 1
  • Raba’ah Syahidah Azis
    • 2
  • Samikanu Kanagesan
    • 1
  • Muhammad Syazwan Mustaffa
    • 1
  • Mohd Khairul Ikhwan Mohd Zawawi
    • 2
  1. 1.Materials Synthesis and Characterisation Laboratory, Institute of Advanced Technology (ITMA)Universiti Putra MalaysiaSerdangMalaysia
  2. 2.Physics Department, Faculty of ScienceUniversiti Putra MalaysiaSerdangMalaysia

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