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Preparation and Magnetic Properties of Zn-Doped Fe3O4 Magnetic Colloid

Year: 1997

Type: article

Abstract: Fe3O4 magnentic colloids were produced by co-precipitating a Fe2+, Fe3+, and Zn2+ containing solution with a NaOH solution at 70°C. Analyses results indicated that the Zn content of the Fe3O4 colloids was always less than the solution's Zn content. The difference was found to be the smallest when the colloid was precipitated at pH=l0. The σs values of the Fe3O4 colloid significantly improved by adding an appropriate amount of Zn ions and precipitaing it at an optimum pH value, pH=10. The optimum Zn ion content was 6.18 at%, which was corresponded to Zn0 · 1854Fe0 · 8145Fe2O4. At this composition the colloid's σe value was 94 eau/g, and increased by more than 34% of pure Fe3O4 colloid's σ value. By theoretical calculation the σe should increase 27.8%.

Source: Journal de Physique IV (Proceedings)

DOI: 10.1051/jp4:19971239

Authors: P. C. Kuo, J. L. Pan, C. H. Lin, D. R. Huang

Institutions: National Taiwan University, National Tsing Hua University, Industrial Technology Research Institute

Language: French

Topic: Magnetic Properties and Synthesis of Ferrites

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2094076744

FWCI:

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Cited by: 1

Related to: 10