Neutron diffraction and bulk magnetic studies have been performed in UNiAID
(2.1), and UNiA.lHa(2.3). Due to the lattice expansion and weakening of the
5f-ligand hybridization, UNiAlD2.1 orders magnetically at a much higher te
mperature than the isostructural UNiAl. (C) 2000 Elsevier Science B.V. AII
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