Preparation and Magnetic Properties of the Core-Nanoshell Composite Materials Doped with Nd

Abstract:

The core-nanoshell composite materials doped with Nd were prepared by a solid-state reaction method. The core is magnetic fly-ash hollow cenosphere, and the shell is the nanosized ferrite doped with Nd. The thermal decomposition process of the sample was investigated by TG- DTA. The morphology and composition of the composite materials were investigated by the X-ray diffraction analysis ( XRD ), scanning electron microscope ( SEM ) and energy disperse spectroscopy ( EDS ). The results of vibrating sample magnetometer ( VSM ) analysis indicated that the exchange-coupling interaction happens between ferrite of magnetic fly-ash hollow cenosphere and nanosized ferrite coating. The exchange-coupling interaction enhances magnetic loss of composite materials. The results show that doped with Nd can enhance the coercivity too, so the magnetic properties could be promoted further. The magnetic properties of the core-nanoshell composite material are better than that of single-phase.

• Periodical: Advanced Materials Research (Volumes 284-286)
• Pages: 1956-1960
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.284-286.1956
• Online since: July 2011
• Authors: Ru Xin Che, Chun Xia Wang, Bing Yu
• Keywords: Core-Nanoshell Composite Materials, Doped with Rare Earth, Magnetic Fly-Ash Hollow Cenosphere, Magnetic Property

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