Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure

J. Phys. IV France 7 (1997) C2-437-C2-438
DOI: 10.1051/jp4/1997040

XRMS Quantitative Study at the L₂ and L₃ Edges of Nd in Nd₂Fe₁₄B

F. Bartolomé^{1, 2}, J.M. Tonnerre¹, D. Raoux¹, J. Chaboy², L.M. Garcia², J. Bartolomé², H. Maruyama³, A. Marcelli⁴, F. Rieutord⁵ and R. Simon<sup>5

1</sup>  Laboratoire de Cristallographie, CNRS, 38042 Grenoble cedex 09, France
²  Institute de Ciencia de Materiales de Aragón, CSIC-U. de Zaragoza, 50009 Zaragoza, Spain
³  Dept. of Physics, Okayama University, 3-1-1 Tsushima-Naka, Okayama 700, Japan
⁴  INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
⁵  ESRF, BP. 220, 38043 Grenoble cedex, France

Abstract
Room-temperature measurements o f the asymmetry ratio of the XRMS signal on a Nd₂Fe₁₄B single crystal in the high temperature phase for several Bragg reflections at L_2,3 edges of Nd are presented. The experimental results can be qualitatively described by taking into account only the dipolar electronic transitions but the quantitative disagreement suggests that a quadnipolar transition should be introduced into the calculation to achieve a more accurate description of the observed signals.

© EDP Sciences 1997