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Some recent high-temperature experiments on spin-glasses

  • J. A. Mydosh
Experimental Papers
Part of the Lecture Notes in Physics book series (LNP, volume 192)

Abstract

The experimental behavior of spin-glasses will be examined as the temperature is reduced towards the freezing temperature T f. First we will consider the effects of atomic short-range order, which unfortunately always occur in real systems, on the local magnetic correlations and magnetic phase diagrams. Then a number of high temperature (T≳Tf) experiments will be reviewed beginning with some static measurements such as resistivity, do susceptibility and specific heat, and extending to a few dynamical ones such as neutron spin echo, muon spin relaxation and ac susceptibility. The static experiments give us some insight into the development of local, spatial spin-correlations, while the dynamic ones can be related to time-correlation functions which are temperature dependent. Based upon these results many experimentalists interpret their data in terms of the growth of magnetic clusters, followed by cluster relaxation leading to a broad distribution of relaxation times which significantly shifts to longer time scales as T→>Tf+. Hence a spin-glass has similar properties to an ordinary glass.

Keywords

Spin Relaxation Magnetic Phase Diagram Neutron Spin Ferromagnetic Cluster Neutron Spin Echo 
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

  • J. A. Mydosh
    • 1
  1. 1.Kamerlingh Onnes Laboratorium der Rijks-Universiteit LeidenLeidenThe Netherlands

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