Synthesis and Characterization of Magnetic γ-Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;/Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; Core-Shell Nanocomposites

Hong Ding; Yue Zhang; Guang Hong Zhou

doi:10.4028/www.scientific.net/amr.282-283.312

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JOURNAL ARTICLE

Synthesis and Characterization of Magnetic γ-Fe2O3/Al2O3 Core-Shell Nanocomposites

Hong Ding Yue Zhang Guang Hong Zhou

Year: 2011 Journal: Advanced materials research Vol: 282-283 Pages: 312-316 Publisher: Trans Tech Publications

DOI: 10.4028/www.scientific.net/amr.282-283.312

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Abstract

The γ-Fe 2 O 3 /Al 2 O 3 core-shell nanocomposites (MCSs) were successfully synthesized by using heterogeneous nucleation method. The results show that a core-shell structures exit in γ-Fe 2 O 3 /Al 2 O 3 MCSs and that the size of γ-Fe 2 O 3 /Al 2 O 3 MCSs is in nanoscale. The saturated magnetization and coercivity of γ-Fe 2 O 3 /Al 2 O 3 MCSs decrease compared with that of γ-Fe 2 O 3 nanoparticles. However, the infrared absorbing ability of γ-Fe 2 O 3 /Al 2 O 3 MCSs is obvious enhanced and it is expected to become a new series of absorbing materials applied in military field.

Keywords:

Coercivity Materials science Nucleation Characterization (materials science) Magnetization Nanocomposite Analytical Chemistry (journal) Nanoscopic scale Crystallography Nanotechnology Magnetic field Chemistry Condensed matter physics Physics Organic chemistry

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Synthesis and Characterization of Magnetic γ-Fe<sub>2</sub>O<sub>3</sub>/Al<sub>2</sub>O<sub>3</sub> Core-Shell Nanocomposites

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