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Title: Crystallographic and magnetic properties of UFe5.8Al6.2 single crystals
Authors: Gonçalves, A. P. 
Estrela, P. 
Waerenborgh, J. C. 
Paixão, J. A. 
Bonnet, M. 
Spirlet, J. C. 
Godinho, M. 
Almeida, M. 
Keywords: ThMn12-type structure; Uranium intermetallics; Magnetic intermetallics; Actinides; Magnetic anisotropy
Issue Date: 1998
Citation: Journal of Magnetism and Magnetic Materials. 189:3 (1998) 283-292
Abstract: Single crystals of UFe5.8Al6.2 were characterised by X-ray and neutron diffraction, 57Fe Mössbauer spectroscopy and magnetisation. The structure refinement by X-ray and neutron diffraction shows a ThMn12-type structure, the Fe atoms fully occupying the 8f and partially occupying the 8j positions. Mössbauer spectra confirm these occupations and further indicate a magnetic ordering below 293 K. Magnetisation measurements show a ferromagnetic behaviour below 300 K, with a and b as easy directions and a spontaneous magnetisation of 10.4 [mu]B/f.u. at 5 K, due to the Fe occupation of 8j position. These single crystal results significantly differ from those previously obtained in UFe6Al6 polycrystalline samples obtained by melting and annealing.
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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