Surface Magnetic Structure of 57Fe2+ Coated\γ_56Fe2O3 Particles with and without Adsorbed Cobalt

Isayuki Horio; Xue–Zhi Zhou; Allan Henrry Morrish

doi:10.1143/jpsj.63.769

Surface Magnetic Structure of ⁵⁷Fe²⁺ Coated\ γ^_56Fe₂O₃ Particles with and without Adsorbed Cobalt

Isayuki Horio, Xue–Zhi Zhou, Allan Henrry Morrish

著者情報

キーワード: Mössbauer spectroscopy, surface, spin canting, ⁵⁷Fe²⁺, Co²⁺, γ -⁵⁶Fe₂O₃

ジャーナル認証あり

1994 年 63 巻 2 号 p. 769-774

DOI https://doi.org/10.1143/jpsj.63.769

詳細

抄録

The surface magnetic structure of γ -⁵⁶Fe₂O₃ acicular particles with and without adsorbed Co²⁺ ions was investigated by coating with ⁵⁷Fe²⁺ ions and then employing Mössbauer spectroscopy. The samples were characterized by chemical analysis, transmission electron microscopy, X-ray diffraction and magnetic measurements. The Mössbauer spectra at room temperature consisted of a sextet with broad lines with tails towards zero velocity. At 4.2, K in an applied field of 50, kOe the spin structure is non-collinear especially for the samples with the adsorbed cobalt ions.

責任著者(Corresponding author)

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