Abstract
An experimental study of irreversible phenomena in amorphous FeMn is reported. Irreversibility is characterized by the existence of both non-equilibrium susceptibility and magnetic viscosity. Both disappear above a critical line TC(H) which is identified as the de Almeida-Thouless line for spin glasses. Tc(h) is, within experimental resolution, independent of time-scale in the range 30-700 s and has the form τoChφwhere τ and h are the reduced temperature and the reduced field respectively, ϕ = 0·75 ± 0·15 and the field prefactor is -15. These results are discussed within the framework of recent mean-field models for spin glasses.
Original language | English |
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Pages (from-to) | 285-295 |
Number of pages | 11 |
Journal | Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties |
Volume | 50 |
Issue number | 2 |
DOIs | |
State | Published - Aug 1984 |
Bibliographical note
Funding Information:It is a pleasure to thank Professors R. D. Parks, &I. B. Salamon and H. Sompolinsky for collaboration in various phases of this research. The FeMn sample has been kindly prepared by Dr. H. S. Chen of Bell Laboratories. This research is supported in part by the Fund for Basic Research administered by the Israel Academy of Science and Humanities.
Funding
It is a pleasure to thank Professors R. D. Parks, &I. B. Salamon and H. Sompolinsky for collaboration in various phases of this research. The FeMn sample has been kindly prepared by Dr. H. S. Chen of Bell Laboratories. This research is supported in part by the Fund for Basic Research administered by the Israel Academy of Science and Humanities.
Funders | Funder number |
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Israel Academy of Sciences and Humanities |