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Journal of Sol-Gel Science and Technology

Erschienen in:

01.05.2011 | Original Paper

Characterization and magnetic exchange observation for CoFe₂O₄–CoFe₂ nanocomposite microfibers

verfasst von: Liping Guo, Xiangqian Shen, Fuzhan Song, Mingquan Liu, Yongwei Zhu

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 2/2011

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Abstract

The magnetic hard-soft CoFe₂O₄–CoFe₂ nanocomposite microfibers have been synthesized by the sol–gel and partial reduction process, where CoFe₂O₄ ferrite is the hard phase with a grain size range from 43 to 62 nm and CoFe₂ alloy the soft phase with grain sizes around 30 nm. These nanocomposite microfibers exhibit the magnetization behavior like a single phase magnetic material, and the magnetic exchange coupling effects are observed between the hard and soft phases. The specific saturation magnetization of CoFe₂O₄–CoFe₂ nanocomposite microfibers shows an increase tendency with the increasing weight fraction of CoFe₂, while the coercivity is consequently reduced. The nanocomposite microfibers have a maximum remanence 51.7 Am²/kg when the phase contents of CoFe₂ around 28 wt% and CoFe₂O₄ about 72 wt%.

Vorheriger Artikel Fabrication and performance of nanoporous TiO2/SnO2 electrodes with a half hollow sphere structure for dye sensitized solar cells

Nächster Artikel Structural characterization of amorphous and nanostructured bismuth silicate xerogels

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Titel: Characterization and magnetic exchange observation for CoFe2O4–CoFe2 nanocomposite microfibers
verfasst von: Liping Guo
Xiangqian Shen
Fuzhan Song
Mingquan Liu
Yongwei Zhu
Publikationsdatum: 01.05.2011
Verlag: Springer US
Erschienen in: Journal of Sol-Gel Science and Technology / Ausgabe 2/2011
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI: https://doi.org/10.1007/s10971-011-2422-y

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