In situ synthesis of lithium ferrite nanoparticle/polymer hybrid

Koichiro Hayashi, Wataru Sakamoto, Toshinobu Yogo

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

Lithium ferrite particle/organic hybrid was synthesized in situ from iron-organic and lithium-organic compounds below 100 °C. Spinel ferrite particle/organic hybrid was synthesized by hydrolyzing a mixture of iron (III) 3-allylacetylacetonate (IAA) and lithium acrylate (LA). X-ray diffraction analysis revealed that the crystallinity of spinel particle was dependent on the polymerization treatment and the hydrolysis conditions. The saturation magnetization of hybrid increased with increasing methylhydrazine and water amount of hydrolysis. Nanocrystalline lithium ferrite particle about 5 nm was dispersed in the organic matrix. The hybrid showed neither remanence nor coercive force at room temperature. The magnetization versus field/temperature HIT curves from 100 to 300 K were superimposed on the same curve and satisfied the Langevin equation. The zero-field-cooled (ZFC) and field-cooled (FC) magnetization curve revealed that the blocking temperature was about 75 K. The remanent magnetization and coercive field of the hybrid were 8.9 A·m2/kg and 26.3 kA/m, respectively, at 10 K.

本文言語英語
ページ(範囲)974-981
ページ数8
ジャーナルJournal of Materials Research
22
4
DOI
出版ステータス出版済み - 4 1 2007
外部発表はい

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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