La5S8Sm
Nakahara, J.F.Takeshita, T.Tschetter, M.J.Beaudry, B.J.Gschneidner, K.A.jr.
Journal of Applied Physics (1988) 63, 2331-2336
a=8.734Å b=8.734Å c=8.734Å
α=90° β=90° γ=90°
La5S8Yb
a=8.697Å b=8.697Å c=8.697Å