Direct evidence for the magnetic ordering of Nd ions in NdMn2Si2 and NdMn2Ge2 by high resolution inelastic neutron scattering
Abstract
We have investigated the low energy nuclear spin excitations in NdMn2Si2 and NdMn2Ge2 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 NdMn2Si2 and NdMn2Ge2. Our results are consistent with those of magnetization and recent neutron diffraction measurements.
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