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Journal of Electron Microscopy 47(4): 293-299 (1998)
© 1998 Oxford University Press

Cluster model calculations for the Fe L2,3-edge fine structure of {alpha}-Fe2O3

Hiroki Kurata2, Kiichi Hojou2 and Takayuki Uozumi1

1College of Engineering, Osaka Prefecture University Sakai, Osaka 599–8531, Japan
2Department of Materials Science, Japan Atomic Energy Research Institute (JAERI) Tokai-mura, Ibaraki 319–1195

Energy-loss near-edge structure of Fe 2p excitation spectrum measured from {alpha}-Fe2O3 is analysed by using a cluster model calculation in which the cubic crystal field and the configuration interaction are taken into account explicitly as solid-state effects. The full multiplet spectrum calculated by including the solid-state effects is in good agreement with the experimental one. It is shown that the influence of the crystal field strength and the configuration interaction appears in the spectral fine structure rather than the intensity ratio between L3 and L2 peaks. At large crystal field strength the spectral shape and the intensity ratio change significantly, which can be interpreted by means of the transition of the character of the ground state.

Keywords     ELNES, cluster model calculation, multiplet, Fe2O3

Received      4 February 1998, accepted 11 May 1998


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