The Effect of High Magnetic Field on Electromagnetic Response and Microwave Absorption of Cobalt Particles During Annealing Process

Shulai Wen, Chao Yao, Dongliang Wang, Chiheng Dong, Xianping Zhang, Yanwei Ma, Satoshi Awaji, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The effect of high magnetic field on microwave absorption of cobalt particles, dispersed uniformly in a paraffin matrix, was investigated in microwave range of 2–18 GHz. The high magnetic field during annealing process could significantly improve the dielectric loss of cobalt particles. The maximum reflection loss of the cobalt particles annealed in high magnetic field is −25.00 dB while the coating thickness is 2.5 mm, which is raised by 62.87 % compared with the ones annealed without high magnetic field. The enhancement in microwave absorption may be ascribed to the improved dielectric loss of cobalt particles induced by high magnetic field.

Original languageEnglish
Pages (from-to)463-468
Number of pages6
JournalJournal of Superconductivity and Novel Magnetism
Volume30
Issue number2
DOIs
Publication statusPublished - 2017 Feb 1

Keywords

  • Cobalt particles
  • Microwave absorption
  • Permeability
  • Permittivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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