Ｘ線回折による超微粒子カドミウムフェライトのイオン配置

• 横山 勝

  慶應義塾大学理工学部

• 佐藤 徹哉

  慶應義塾大学理工学部計測工学科

• 太田 英二

  慶應義塾大学理工学部

• 佐藤 寿彦

  東京工科大学工学部電子工学科

書誌事項

タイトル別名

• Cation Distribution in Ultrafine Cadmium Ferrite Particles Determined by X-ray Diffraction.
• Xセン カイセツ ニヨル チョウ ビリュウシ カドミウム フェライト ノ イオ

抄録

Cation distribution, oxygen parameter and thermal parameter for bulk material and fine particles of CdFe₂O₄ were determined by X-ray powder diffraction based on the relation between In(I^obs/I^cal) and sin²θ/λ², where I^obs is the observed intensity, I^cal is the calculated intensity, θ is the Bragg angle, and λ is the X-ray wavelength. The occupancy of Fe³⁺ ions at the A-sites is 0.06 and 0.13 for bulk material and fine particles with a size of-7 or-8nm, respectively. The cluster consisting of small number of Fe³⁺ ions at the B-sites are formed around a Fe³⁺ ion at the A-site through the A-B interactions. The oxygen parameters of the fine particles with size of-7 and -8 nm and the bulk material are 0.385, 0.389 and 0.391, respectively. The thermal parameters of the fine particles are approximately eighty times larger than that of the bulk material. The enhanced thermal parameter can be explained in terms of the softening on the surface.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 44 (1), 111-115, 1997

  一般社団法人 粉体粉末冶金協会

キーワード

• CdFe<SUB>2</SUB>O<SUB>4</SUB>
• Ultra-fine particles
• cation distribution
• magnetic cluster

詳細情報

• CRID: 1390282681283691008
• NII論文ID: 10002013378
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.44.111
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 4118708
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4118708
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可