Reorientation Temperature Tsr Research Articles

Temperature-induced spin reorientation in TbMn6Sn6−xGax

The spin reorientation process in TbMn6Sn6−xGax has been investigated using Sn119 Mössbauer spectroscopy. The Sn site hosting the substituting Ga atoms is identified as Sn-2d. The reorientation is confirmed to be a 90° rotation of the Mn moments from ab plane to c axis upon cooling through Tsr. The reorientation temperature Tsr is observed to decrease with increasing Ga doping at 255±18K∕Ga. Finally, we evaluate the anisotropic contributions to the hyperfine field at the Sn sites as seen through the spin reorientation.