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Synthesis of Ni ferrite powders by coprecipitation and hydrothermal methods

S. A. POPESCU1, P. VLAZAN1, P. V. NOTINGHER2, S. NOVACONI1, I. GROZESCU1,* , A. BUCUR1, P. SFIRLOAGA1

Affiliation

  1. National Institute for Research and Development in Electrochemistry and Condensed Matter, 1Plautius Andronescu Str, 300224 Timisoara, Romania
  2. Politehnica University of Bucharest, Electrical Engineering Faculty, 313 Splaiul Independentei Str., 060042 Bucharest, Romania

Abstract

The coprecipitation and hydrothermal methods were used to obtain Ni ferrite nanopowders with Ni0.8Fe2.2O4 stoichiometry. Morphological and magnetic properties of the synthesized nickel ferrites nanopowders have been studied. The structural properties of the Ni0.8Fe2.2O4 nanopowders were studied by X-ray diffraction (XRD). Surface morphology was examined by scanning electron microscopy (SEM). The results show that both the synthesis method and conditions used to obtain the Ni ferrites have significant influence on their structure and properties. The low frequency (50 Hz) magnetic behavior of the Ni ferrites also exhibits important differences evidenced by magnetic hysteresis curves..

Keywords

Ni ferrite, Coprecipitation, Hydrothermal, XRD, SEM.

Submitted at: March 10, 2011
Accepted at: March 16, 2011

Citation

S. A. POPESCU, P. VLAZAN, P. V. NOTINGHER, S. NOVACONI, I. GROZESCU, A. BUCUR, P. SFIRLOAGA, Synthesis of Ni ferrite powders by coprecipitation and hydrothermal methods, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 3, pp. 260-262 (2011)