Effect of high magnetic field annealing on the microstructure and magnetic properties of CoFe layered double hydroxide

Xiong Zhang, Dongliang Wang, Shuxia Zhang, Yanwei Ma, Wensheng Yang, Yi Wang, Satoshi Awaji, Kazuo Watanabe

研究成果: Article査読

20 被引用数 (Scopus)

抄録

The effects of high magnetic field (10 T) on the products obtained by calcination of CoFe LDH precursors at different temperatures were investigated. The XRD results indicated that FeIII substituted for CoIII in Co3O4 to yield CoIICoIIIFe IIIO4 under the calcination of CoFe LDH precursors at 400 °C. The products obtained by magnetic field annealing at 400 °C had a porous plate-like morphology, whereas the products without magnetic field annealing were composed of nanoparticles. It was seen that CoFe 2O4 phase could be formed at low temperature (about 500 °C) under the magnetic field annealing. The grain size of products obtained by magnetic field annealing at 800 °C was larger than that of zero magnetic field. It was found that the saturation magnetization was significantly enhanced after magnetic field annealing, especially at lower temperature (≤600 °C). The possible reason for the effects on the microstructure and magnetic properties of products obtained by magnetic field annealing was discussed.

本文言語English
ページ(範囲)3023-3027
ページ数5
ジャーナルJournal of Magnetism and Magnetic Materials
322
20
DOI
出版ステータスPublished - 2010 10月

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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