Unique angular dependence of the unusual first order transition temperature in Gd/sub 5/(Si/sub 0.5/Ge/sub 0.5/)/sub 4/

In this paper, we study the field dependence of the transition temperature (T/sub c/) leads to a transition temperature which changes as a function of angle of the magnetic field in Gd/sub 5/(Si/sub 0.5/Ge/sub 0.5/)/sub 4/.