Title :
Magnetic properties of Fe formed by H2 reduction of lepidocrocite in the presence of exfoliated MoS2
Author :
Templeton, T.L. ; Arrott, A.S. ; Curzon, A.E. ; Frindt, R.F. ; Gee, M.A. ; Li, X.Z. ; Schurer, P.J. ; LaCombe, J.L.
Author_Institution :
Dept. of Phys., Simon Fraser Univ., Burnaby, BC, Canada
fDate :
9/1/1992 12:00:00 AM
Abstract :
Fine particles of α-Fe are prepared by the reduction in H 2 of lepidocrocite in the presence of MoS2, which allows the reduction to take place with restricted coalescence of the starting particles. Magnetic moments and coercivities are determined at the temperature during processing. Results are given for magnetization measurements, electron microscopy, Mossbauer effect spectroscopy, and X-ray diffraction. Enhanced coercivities are observed when MoS2 is present. Surface pinning, deduced from the approach to magnetic saturation, is likely at the interface between the metallic particle and a surface oxide layer
Keywords :
Mossbauer effect; X-ray diffraction examination of materials; coercive force; ferromagnetic properties of substances; iron; magnetic anisotropy; magnetic moments; magnetic properties of fine particles; magnetic surface phenomena; magnetisation; reduction (chemical); transmission electron microscope examination of materials; α-Fe; Fe; H2 reduction; Mossbauer effect spectroscopy; TEM; X-ray diffraction; coercivities; electron microscopy; exfoliated MoS2; fine particles; lepidocrocite; magnetic moments; magnetic saturation; magnetization; restricted coalescence; surface oxide layer; surface pinning; Coercive force; Electron microscopy; Iron; Magnetic force microscopy; Magnetic moments; Magnetic properties; Magnetization; Spectroscopy; Temperature; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
