Effect of annealing temperature on electromagnetic absorption properties of crystalline Fe-Si-Al alloy powder-polymer composites

Sung Jae Lee, Yoon Bae Kim, Kyung Sub Lee, Dong Jin Byun, Sang Woo Kim

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6 Citations (Scopus)

Abstract

We investigated effect of annealing temperature on lattice strain of crystalline FeSiAl alloy powders and related electromagnetic absorption properties for crystalline FeSiAl alloy powder-polymer composites. The lattice strain of the microforged FeSiAl alloy powder gradually decreased with annealing temperature and highly relieved by annealing treatment at 700 °C The magnetic saturation significantly increased by the microforging and subsequent annealing treatment due to increase of the stress relaxation. The simulated power loss in the near-field regime showed high electromagnetic absorption over 31% in above 1 GHz because of annealing effect. From simulation results of magnetic field distributions in the near-field, the ferromagnetic metal powder-polymer composite showed excellent electromagnetic absorption in the GHz frequency range.

Original languageEnglish
Pages (from-to)4121-4124
Number of pages4
JournalPhysica Status Solidi (A) Applications and Materials Science
Volume204
Issue number12
DOIs
Publication statusPublished - 2007 Dec 1

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry

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