Preparation of Spinel-Type Ferrite Fine Particles via Plasma Route Using Amorphous Citrate Gel as a Precursor

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概要

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• In order to prepare complex ferrite fine particles with good crystallinity and stoichiometry, the authors adopted amorphous citrate gel as the precursor for plasma powder synthesis. The produced particles were monophase spinel-type ferrites of M_<1-x>Zn_xFe_2O_4 (M = Mn, Ni, Cu, x = 0.3 or 0.5) with good crystallinity. Energy-dispersive X-ray spectroscopy (EDX) microanalysis of the precursor and product particles (Mn-Zn-Fe-O) revealed very sharp distributions of the Mn/Fe ratio in both precursor and product. The average size of the fine particles was 51 nm, and the coercive forces were 45-71 Oe; these measurements suggest the suitability of these fine particles in applications utilizing the effects of magnetic heating due to hysteresis losses.

• 社団法人応用物理学会の論文
• 2002-10-15

著者

• Kobayashi Satoru

  National Institute Of Advanced Industrial Science And Technology (aist)

• KIKUKAWA Nobuyuki

  National Institute of Advanced Industrial Science and Technology (AIST)

• SUGASAWA Masami

  National Institute of Advanced Industrial Science and Technology (AIST)

関連論文

• Control of Adsorption by Microwave Irradiation
• Preparation of Spinel-Type Ferrite Fine Particles via Plasma Route Using Amorphous Citrate Gel as a Precursor

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