Contrasting the magnetic response between magnetic-glass and reentrant   spin-glass
  Magnetic-glass is a recently identified phenomenon in various classes of magnetic systems undergoing a first order magnetic phase transition. We shall highlight here a few experimentally determined characteristics of magnetic-glass and the relevant set of experiments, which will enable to distinguish a magnetic-glass unequivocally from the well known phenomena of spin-glass and reentrant spin-glass. 
S. B. Roy and M. K. Chattopadhyay