Crystal structure and low-temperature magnetic properties of RmMIn3m+2 compounds (M=Rh or Ir; m=1,2; R=Sm or Gd)
Abstract
We have synthesized the series of compounds RMIn5 and R2MIn8 in single crystal form, where R=Sm or Gd and M=Rh or Ir. These materials form in tetragonal derivatives of the Cu3Au structure RIn3. Measurements of magnetic susceptibility, electrical resistivity, and low-temperature heat capacity are reported. These compounds order antiferromagnetically at low temperature (TN < 45 K) and their low-temperature magnetic properties remain nearly unaltered compared to their SmIn3 and GdIn3 cubic relatives. The present data are compared to the magnetic properties of the isostructural (Ce, Nd) (Rh, Ir)In5 and (Ce, Nd)2(Rh, Ir)In8 compounds, and the validity of de Gennes scaling as a function of rare earth in a given structure is discussed. © 2001 The American Physical Society.
Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.