Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2011-10-10
Journal of Magnetism and Magnetic Materials 324, 1030 (2012)
Physics
Condensed Matter
Strongly Correlated Electrons
Scientific paper
10.1016/j.jmmm.2011.10.020
We have investigated the low energy nuclear spin excitations in NdMn$_2$Si$_2$ and NdMn$_2$Ge$_2$ by high resolution inelastic neutron scattering. Previous neutron diffraction investigations gave ambiguous results about Nd magnetic ordering at low temperatures. The present element-specific technique gave direct evidence for the magnetic ordering of Nd ions. We found considerable difference in the process of the Nd magnetic ordering at low temperature in NdMn$_2$Si$_2$ and NdMn$_2$Ge$_2$. Our results are consistent with those of magnetization and recent neutron diffraction measurements.
Chatterji Tapan
Combet J.
Frick Bernhard
Szyula A.
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