Synthesis of Co-, Co-Zn and Ni-Zn ferrite powders by the microwave-hydrothermal method

Chan Kong Kim, Jin Ho Lee, Shunsaku Katoh, Riichi Murakami, Masahiro Yoshimura

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Abstract

Co-,Ni-Zn, and Co-Zn ferrites were prepared with nanosize well-developed spinel phases by the coprecipitation and microwave-hydrothermal (M-H) methods. X-ray diffraction (XRD) and transmission electron microscope (TEM) techniques showed that the average particle size of ferrites obtained by the M-H process is about 10 nm. In the Co-ferrite system, single-phase ferrites with a spinel structure began to form at a relatively low temperature (100°C) in a short holding time (30 min). The lattice parameter of M1-xZnxFe2O4 systems (M = Ni or Co, 0 ≤ x ≤ 1) increased with an increase of Zn concentration. The crystallization of the spinel ferrites was promoted by the increase in reaction temperature and time.

Original languageEnglish
Pages (from-to)2241-2250
Number of pages10
JournalMaterials Research Bulletin
Volume36
Issue number12
DOIs
Publication statusPublished - 2001 Oct 1

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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