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Relaxation effects in spin glasses around the freezing temperature

  • L. E. Wenger
Experimental Papers
Part of the Lecture Notes in Physics book series (LNP, volume 192)

Abstract

Measurements of the ac magnetic susceptibility in zero field for several insulating spin-glasses are reported. By resolving the frequency dependence of both the in-phase component X′ and the out-of-phase component X″, the dynamical behavior of these spin systems around their freezing temperatures Tf can be clearly characterized. For two insulating systems: (EuSr)S and cobalt aluminosilicate, the susceptibility behavior can be described in terms of a wide distribution of relaxation times for temperatures well above Tf and whose width increases dramatically as the temperature nears T f. Furthermore by employing a simple phenomenological relaxation model, a quantitative picture of the relaxation time distribution can be ascertained as it evolves. From these pictures for the insulating as well as metallic spin-glass system, the dynamic behavior near Tf is qualitatively different than that of a long-range magnetically ordered solid.

Keywords

Relaxation Time Freezing Temperature Spin Relaxation Time Relaxation Time Distribution Single Relaxation Time 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • L. E. Wenger
    • 1
  1. 1.Department of PhysicsWayne State UniversityDetroitUSA

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