Magnetic Structures of MFe4+(delta)AI8-delta (M=Lu,Y)
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.
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
Original language: en
Available languages: en