Prokes, K .; Brück, E. ; Sechovský, V.: Antiferromagnetic structure in UNiAl at dilution temperatures. Physica B 404 (2009), p. 3025-3027
10.1016/j.physb.2009.07.031
Abstract:
Neutron diffraction experiments in zero field reveals that the originally sine-wave-modulated antiferromagnetic structure in UNiAl starts to square-up at low temperatures. The squaring-up is, however, not completed even at 150 mK, most probably due to competing magnetic interactions. The fact that the magnetic moments are not equal at all the uranium atomic sites is responsible at least partially for the enhanced low-temperature-specific heat coefficient observed in UNiAl at low temperatures.