Preparation and electromagnetic properties of zinc ferrite/expanded graphite composites

• Autorzy: Shen G. , Yu S. , Cao Y.

Identyfikatory

DOI

10.2478/s13536-014-0209-x

• Języki publikacji: EN

Abstrakty

EN

An effective process for the synthesis of nano spinel zinc ferrite/expanded graphite composites was developed in order to get an electromagnetic interference shielding material. Firstly, expandable graphite was prepared using sulfuric and nitric acid solutions. Then, the precursor of the composites was produced by chemical co-precipitation method, followed by heating treatment. The obtained composites were characterized by X-ray diffraction and scanning electron microscopy. The dielectric and magnetic properties were determined using vector network analyzer and vibrating sample magnetometry. The results showed that ferrite nanoparticles with the sizes of about 50–150 nm were uniformly dispersed on the surface and interspace of EG. The magnetic properties of the composites changed by adjusting the ferrite/EG ratio and the composites had high dielectric constant in the range of 2–18 GHz. These properties of the prepared composites suggest that they can be used as a promising electromagnetic interference shielding material.

Słowa kluczowe

EN

ferrite; graphite; composites; nanocomposites; magnetic properties

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2014
• Tom: Vol. 32, No. 3
• Strony: 470--474
• Opis fizyczny: Bibliogr. 28 poz., rys., wykr.

Twórcy

autor

Shen G.

• School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
• [e-mail]

autor

Yu S.

• Shanghai Research Institute of Chemical Industry, Shanghai 200062, China

autor

Cao Y.

• School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China

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