Static and dynamic magnetic characteristics of Mg substituted Ba-Co2 W-type hexaferrites

Rafaqat Ali Khan, Shigemi Mizukami, Asad Muhammad Khan, Bushra Ismail, Abdur Rahman Khan, Terunobu Miyazaki

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

This paper reports the magnetic and microwave characteristics of Mg substituted BaCo2Fe16O27 hexaferrite particles obtained using chemical co-precipitation method. Being diamagnetic in nature, Mg2+ ions significantly varied the magnetization (M), remanent magnetization (Mr), coercivity (Hc), complex permittivity and permeability, which reflected in the microwave absorption spectra for all the synthesized samples. The dependencies of all these parameters were correlated while taking extreme care of the crystallographic preferences of doped ions in W-type crystal structure. The results showed that hexaferrites with compositions BaCo1.8Mg0.2Fe16O27, BaCo1.6Mg0.4Fe16O27 and BaCo1.4Mg0.6Fe16O27 exhibited optimum magnetic and microwave absorption characteristics. It was further elaborated that Mg ions content in BaCo2Fe16O27 hexaferrites can be adjusted in accordance to the material with required magnetic and microwave characteristics.

Original languageEnglish
Pages (from-to)197-202
Number of pages6
JournalJournal of Alloys and Compounds
Volume637
DOIs
Publication statusPublished - 2015 Jul 15

Keywords

  • Anisotropy
  • Chemical synthesis
  • Coating materials
  • Magnetic measurements
  • Magnetization

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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