A neutron polarization analysis study of moment correlations in (Dy(0.4)Y(0.6))T(2) (T = Mn, Al).

Journal article

We present a study of the magnetic moment correlations of two pseudo-binary C15 Laves phase compounds, (Dy(0.4)Y(0.6))Mn(2) and (Dy(0.4)Y(0.6))Al(2), both of which have spin-glass-like magnetic ground states at low temperature. We use neutron powder diffraction with polarization analysis to isolate the diffuse scattering associated with the correlated spin-glass ground state, and compare and contrast the two systems. Despite there being differences of correlation length scale, we discover that the moment-moment correlations of these two disordered magnets are quite similar over a short range, and hence conjecture that the Mn ions in (Dy(0.4)Y(0.6))Mn(2) have little influence on the ground-state magnetic properties.

Authors: Stewart, JR; Hillier, J; Manuel, P; Cywinski, R

• Publication status: Published
• Journal: Journal of physics. Condensed matter : an Institute of Physics journal
• Volume: 23
• Issue: 16
• Pages: 164205
• Publication date: 2011-04-01
• DOI: 10.1088/0953-8984/23/16/164205
• EISSN: 1361-648X
• ISSN: 0953-8984
• Language: English