Microwave Absorption Characteristics of some Ferrite-Filled Polymer Composites

Fadzidah Mohd Idris; Mansor Hashim; Ismayadi Ismail; Idza Riati Ibrahim; Masni Manap; Mohd Shamsul Ezzad Shafie

doi:10.4028/www.scientific.net/AMR.895.298

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 895Microwave Absorption Characteristics of some...

Microwave Absorption Characteristics of some Ferrite-Filled Polymer Composites

Abstract:

Prior to their use for microwave absorption, different compositions of Ni_xZn_1-xFe₂O₄(x = 0.5, 0.6, 0.7 and 0.8) were prepared via mechanical alloying and sintering. X-ray diffractometry (XRD) was used to investigate the crystalline phase formation. Scanning transmission electron microscopy (STEM) and field emission electron microscopy (FeSEM) were used to investigate the particle size and surface morphology respectively. The complex-permeability components, μʹ and μʺ, were also measured using an Agilent 4291B material analyzer from 1 MHz to 1 GHz. From the XRD results it is shown that at 900oC the full phase of nickel zinc ferrite was formed. The μʺ values suggest that the ferrite sample can absorb well microwave energy for frequencies 1 MHz to 1 GHz and higher. This is proved by microwave absorption measurements carried out up to 12 GHz.Keywords: NiZn-ferrite, microwave absorption, magnetic materials

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Periodical:

Advanced Materials Research (Volume 895)

Pages:

298-304

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.895.298

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February 2014

Authors:

Fadzidah Mohd Idris*, Mansor Hashim, Ismayadi Ismail, Idza Riati Ibrahim, Masni Manap, Mohd Shamsul Ezzad Shafie

Keywords:

Magnetic Material, Microwave Absorption, NiZn-Ferrite

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