Community Research and Development Information Service - CORDIS

Abstract

The magnetic structure of nonstoichiometric LuFe(4)+(delta)AI(8)-(delta) and Yfe(4)+(delta)AI(8)-(delta) compounds with a small Fe excess (delta~ 0.40) was investigated by M÷ssbauer spectroscopy, magnetization measurements, and both polarized and un-polarized neutron-scattering experiments on single crystals. The small excess of Fe atoms substitute Al at the 8j positions and have a pronounced effect on the magnetic properties. The NÚel temperature decreases from ~ 190 to 100 K and the magnetic ordering changes from the cycloid modulation found in the stoichiometric compounds to an amplitude modulated wave with a much shorter period.

Additional information

Authors: PAIXO J.A, Departamento de Fisica, Faculdade CiÛncias e Tecnologia, Universidade de Coimbra, (PT);RAMOS SIVLA M, Departamento de Fisica, Faculdade CiÛncias e Tecnologia, Universidade de Coimbra, (PT);WAERENBORGH J.C, Instituto Technol¾gico e Nuclear, SacavÚm, (PT);GONÃALVES A.P, Instituto Technol¾gico e Nuclear, SacavÚm, (PT);LANDER G.H, JRC, Institute for Transuranium Elements, Karlsruche (DE);BROWN P.J, Institut Laue-Langevin, Grenoble (FR);GIDINHO M, Departamento de Fisica, Faculdade de CiÛncia, Universidade de Lisboa (PT);BURLET P, DÚpartamento de Recherche Fondamentale sut la Matiþre CondensÚe, Commisariat Ó l'nergie Atomique-Grenoble, (FR);GON?ALVES A.P, Instituto Technol?gico e Nuclear, SacavUm, (PT)
Bibliographic Reference: An article published in: Physical Review B. Vol.63 (2001) pp. 054410-1 to 054410-12
Availability: An article published in: Physical Review B. Vol.63 (2001) pp. 054410-1 to 054410-12
Record Number: 200013366 / Last updated on: 2001-06-27
Category: PUBLICATION
Original language: en
Available languages: en