Synthesis of La-Co substituted M-type calcium hexaferrite by polymerizable complex method

T. Kikuchi, T. Nakamura, T. Yamasaki, M. Nakanishi, T. Fujii, J. Takada, Y. Ikeda

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

Synthesis of La-Co substituted M-type Calcium hexaferrite was studied. Samples were prepared by polymerizable complex method. High purity reagent of strontium carbonate, iron (III) nitrate ennnahydrate, cobalt (II) nitrate hexahydrate and lanthanum oxide were used as starting materials. Prepared aqueous solution was heated for dehydration and gelling. Thermal pyrolysis was carried out by heating the gel. The obtained precursor powders were ground with an alumina mortar and compacted by uniaxial pressing into disk specimens and then heated at temperature range between 1173 K and 1573 K in air. Phase identification and determination of lattice parameters were carried out by powder X-ray diffraction (XRD). Scanning Electron Microscope (SEM) was utilized to investigate the microstructure of the polycrystalline ferrites. Magnetic properties were discussed by magnetization measurements by measuring of M-H curve with vibrating sample magnetometer (VSM). Single-phase of M-type hexaferrite was obtained at lower temperature relative to by conventional synthesis.

Original languageEnglish
Article number092040
JournalIOP Conference Series: Materials Science and Engineering
Volume18
Issue numberSYMPOSIUM 6
DOIs
Publication statusPublished - Jan 1 2011
Event3rd International Congress on Ceramics, ICC 2011 - Osaka, Japan
Duration: Nov 14 2010Nov 18 2010

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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