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Effects of excessive Zn2+ions on intrinsic magnetic and structural properties of Ni0.2Zn0.6Cu0.2Fe2O4powder prepared by chemical coprecipitation method

Authors
Journal
Current Applied Physics
1567-1739
Publisher
Elsevier
Publication Date
Volume
10
Issue
3
Identifiers
DOI: 10.1016/j.cap.2009.10.001
Keywords
  • Nizncu Ferrite
  • Chemical Coprecipitation
  • Intrinsic Magnetic Properties
  • Structural Properties
Disciplines
  • Chemistry
  • Engineering

Abstract

Abstract Zn(OH) 2 is a kind of amphoteric compound. Therefore, for chemical coprecipitation method, the precipitation of Zn 2+ ions may be incomplete if using NaOH as precipitator. In this study, single-phase powder specimens with a nominal composition Ni 0.2Zn 0.6Cu 0.2Fe 2O 4 were prepared with chemical coprecipitation method, and the effects of excessive Zn 2+ content ( x, x = 3%, 5%, 7%, 9%) in working solution on intrinsic magnetic and structural properties were studied by vibrating sample magnetometer and X-ray diffractometer, respectively. It was found that the magnetization when H m = 398 kA/m (5000 Oe) reached a maximum when x = 5%, and then decreased with the increase of x, which was attributed to the effect of different amount of Zn 2+ in A sites on the A–B and B–B exchange interaction. Moreover, it was found that the lattice parameter was affected by the Zn 2+ and Fe 3+ ions due to their different ion radius to a certain extent.

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