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Crystallographic and magnetic properties of UFe5.8Al6.2 single crystals


Reference:

Goncalves, A. P., Estrela, P., Waerenborgh, J. C., Paixao, J. A., Bonnet, M., Spirlet, J. C., Godinho, M. and Almeida, M., 1998. Crystallographic and magnetic properties of UFe5.8Al6.2 single crystals. Journal of Magnetism and Magnetic Materials, 189 (3), pp. 283-292.

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Abstract

Single crystals of UFe5.8Al6.2 were characterised by X-ray and neutron diffraction, Fe-57 Mossbauer 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. Mossbauer 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.

Details

Item Type Articles
CreatorsGoncalves, A. P., Estrela, P., Waerenborgh, J. C., Paixao, J. A., Bonnet, M., Spirlet, J. C., Godinho, M. and Almeida, M.
DepartmentsFaculty of Engineering & Design > Electronic & Electrical Engineering
RefereedYes
StatusPublished
ID Code12141
Additional InformationID number: 000076637600003

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