A comparative study of the magnetic and microwave properties of Al3+ and In3+ substituted Mg-Mn ferrites

Chien Yie Tsay, Shan Chien Liang, Chien Ming Lei, Chung Chieh Chang

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The effect of substitution of diamagnetic Al3+ and In3+ ions for partial Fe3+ ions in a spinel lattice on the magnetic and microwave properties of magnesium-manganese (Mg-Mn) ferrites has been studied. Three kinds of Mg-Mn based ferrites with compositions of Mg0.9Mn0.1Fe2O4, Mg0.9Mn0.1Al0.1Fe1.9O4, and Mg0.9Mn0.1In0.1Fe1.9O4 were prepared by the solid-state reaction route. Each mixture of high-purity starting materials (oxide powders) in stoichiometric amounts was calcined at 1100 °C for 4 h, and the debinded green compacts were sintered at 1350 °C for 4 h. XRD examination confirmed that the sintered ferrite samples had a single-phase cubic spinel structure. The incorporation of Al3+ or In3+ ions in place of Fe3+ ions in Mg-Mn ferrites increased the average particle size, decreased the Curie temperature, and resulted in a broader resonance linewidth as compared to un-substituted Mg-Mn ferrites in the X-band. In this study, the In3+ substituted Mg-Mn ferrites exhibited the highest saturation magnetization of 35.7 emu/g, the lowest coercivity of 4.1 Oe, and the highest Q×f value of 1050 GHz at a frequency of 6.5 GHz.

Original languageEnglish
Pages (from-to)4748-4753
Number of pages6
JournalCeramics International
Volume42
Issue number4
DOIs
Publication statusPublished - Mar 1 2016
Externally publishedYes

Fingerprint

Ferrites
Magnesium
Manganese
Microwaves
Ions
Saturation magnetization
Curie temperature
Coercive force
Solid state reactions
Linewidth
Powders
Oxides
Ferrite
Substitution reactions
Particle size
manganese ferrite
Chemical analysis
spinell

Keywords

  • A. Powders: solid state reaction
  • C. Magnetic properties
  • D. Ferrites
  • D. Spinels
  • E. Functional applications

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

A comparative study of the magnetic and microwave properties of Al3+ and In3+ substituted Mg-Mn ferrites. / Tsay, Chien Yie; Liang, Shan Chien; Lei, Chien Ming; Chang, Chung Chieh.

In: Ceramics International, Vol. 42, No. 4, 01.03.2016, p. 4748-4753.

Research output: Contribution to journalArticle

Tsay, Chien Yie ; Liang, Shan Chien ; Lei, Chien Ming ; Chang, Chung Chieh. / A comparative study of the magnetic and microwave properties of Al3+ and In3+ substituted Mg-Mn ferrites. In: Ceramics International. 2016 ; Vol. 42, No. 4. pp. 4748-4753.
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