Eur. Phys. J. B 41, 207-212 (2004)
https://doi.org/10.1140/epjb/e2004-00311-x

Pair correlations and interaction energies in FePd single crystal

¹ Physik Department E13/FRM II, TU München, James-Franck Str. 1, 85747 Garching, Germany
² Texas Materials Institute, University of Texas, Austin, Texas 78712, USA
³ LEM (ONERA-CNRS), 29 avenue de la division Leclerc, BP 72, 92320 Châtillon/Bagneux and Léon Brillouin Laboratory (CEA-CNRS), CEA-Saclay, 91190 Gif-sur-Yvette, France
⁴ LPCQ, Université Mouloud Mammeri, 15000 Tizi-Ouzou, Algeria
⁵ IPCMS, CNRS-ULP, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France

Corresponding author: ^a mtarik@ph.tum.de

Received: 15 April 2004
Revised: 11 August 2004
Published online: 12 October 2004

Abstract

Diffuse neutron scattering measurements were carried out in a FePd single crystal at 1020 K in the (100) and (110) reciprocal planes. The diffuse intensity is nearly symmetric, showing that the static displacements are small. A set of displacement and short-range order parameters have been fitted to the measured data using a least square procedure. The short-range order parameters have been used in conjunction with an inverse cluster variation method to deduce the pair interaction energies. A strong attractive interaction between second nearest-neighbour like atoms is found.