How to change or remove the anisotropy of spin glasses, with some other reflections on the anisotropy problem
Résumé
We develop some ideas on the freezing of the macroscopic anisotropy energy of spin glasses and introduce the concepts of thermo-remanent anisotropy (TRA) and isothermal remanent anisotropy (IRA). We present results of hysteresis cycle experiments on CuMn alloys which confirm these ideas. In particular we describe a method which allows us to reduce the anisotropy at will and even to remove it.
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