Neodymium-glass laser with high-frequency Q switching

Abstract

To explain the occurrence of the sharp cusp of the low-field susceptibility of spin glasses, some theories have been put forward which lead to a special type of phase transition at a critical temperature 7,. We show that the straightforward application of such theories to deduce the magnetic part c, of the specific heat leads to some anomaly of this quantity at 7,. More accurate measurements of c, and x near 7, are necessary. At the moment it looks like a contradiction between theory and experiment.