ePubs

The open archive for STFC research publications

Full Record Details

Persistent URL http://purl.org/net/epubs/work/66429
Record Status Checked
Record Id 66429
Title Magnetic order in YbMn2Si2 - Neutron scattering investigation
Contributors
Abstract Several mechanisms have been proposed to account for the structural and magnetic behaviour of the rare earth intermetallic compound YbMn2Si2 below the transition that occurs around ~30 K. We have carried out detailed neutron diffraction measurements over the temperature range ~0.3–52 K and confirm both an antiferromagnetic structure with ferromagnetic Mn (001) planes coupled antiferromagnetically along the c-axis above ?30 K and the absence of ordering of the Yb sublattice down to 0.3 K. The decrease in intensity of the (111) reflection around ~30 K together with the appearance of satellite reflections of propagation vector k=0012 k=0012 confirm that the magnetic unit cell doubles along the c axis below TN2. The resultant molecular field acting on half of the ions below ?30 K removes the degeneracy of the Kramers doublets of the Yb3+ ions and accounts for the additional excitations observed below ~30 K compared with the inelastic neutron scattering above ~30 K.
Organisation ISIS , ISIS-HET , STFC
Keywords ISIS 2013
Funding Information
Related Research Object(s):
Licence Information:
Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article Journal of the Korean Physical Society 63, no. 3 (2013): 314-319. doi:10.3938/jkps.63.314 2013