Tailoring of structural, electrical and magnetic properties of BaCo 2 W-type hexaferrites by doping with ZrMn binary mixtures for useful applications

Muhammad Javed Iqbal, Rafaqat Ali Khan, Shigemi Mizukami, Terunobu Miyazaki

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

Single-phase W-type hexaferrite, BaCo2Fe16-2x(ZrMn) xO27 (x=0.01.0), has been synthesized by the chemical co-precipitation technique. Mössbauer analysis indicates substitution of Zr ions on tetrahedral (4e and 4fIV) sites and Mn ions on the octahedral '4fVI site' at low-doped concentration when the concentration is increased Mn ions but show preference for the octahedral '2b site'. The highest enhancement in the value of the room temperature resistivity of 2.82×109 cm has been obtained by doping with ZrMn content of x=0.6. The dissipation factor increases from 6.49×103 to 9.97×103 at 10 kHz with the addition of ZrMn dopants. Such materials are potentially suitable for electromagnetic attenuation purposes, for microwave absorption and as radar absorbing material. High values of saturation magnetization (67 emu/g) and remanent magnetization (34.7 emu/g) are obtained for substitution level of x=0.4 making them suitable for data processing devices.

Original languageEnglish
Pages (from-to)2137-2144
Number of pages8
JournalJournal of Magnetism and Magnetic Materials
Volume323
Issue number16
DOIs
Publication statusPublished - 2011 Aug

Keywords

  • Co-precipitation
  • Electronic characterization
  • Hexaferrites
  • Magnetic properties
  • Mössbauer analysis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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