T.R. McGuire, R.J. Gambino
Journal of Magnetism and Magnetic Materials
Amorphous films of composition Gd0.37Al0.63 are found to exhibit a transition to a spin-glass state below 16 K. The magnetic properties show thermal hysteresis and relaxation below the spin-glass transition. The susceptibility maximum at 16 K, when measured in dc fields ≤10 Oe, sharpens into an asymmetric cusp, consistent with the Edwards-Anderson picture of the transition as one into a random, but rigid, state. Using the theory of Sherrington and Kirkpatrick, we extract the spin-glass order parameter from the observed cusp, and find deviations from simple mean-field behavior. © 1977 The American Physical Society.
T.R. McGuire, R.J. Gambino
Journal of Magnetism and Magnetic Materials
T.R. McGuire, S.A. Shivashankar, et al.
Journal of Applied Physics
T.R. McGuire, W.A. Crapo
Journal of Applied Physics
T. Mizoguchi, T.R. McGuire, et al.
Physica B+C