Reversibility and time dependence of the magnetization in Ag:Mn and Cu:Mn spin glasses
- 1 March 1981
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 52 (3), 1771-1772
- https://doi.org/10.1063/1.329709
Abstract
We report dc‐magnetization measurements on Ag:Mn and Cu:Mn spin glass samples (1–8% Mn concentrations), at temperatures of 4–30 K, and in fields of 4–400 Oe. The temperature at which the magnetization of a particular sample becomes reversible (TR) is found to depend on the homogeneity of the sample, and on the magnitude of the measurement field. Inhomogeneous samples showed irreversible behavior far above the glass temperature (TR≃1.5 TG). After annealing, these samples showed a sharper peak in the magnetization at TG∼TR. We feel this is strong evidence toward a unique glass temperature for homogeneous samples in low fields. In higher fields (400 Oe) we found reversibility to begin at a temperature less than the magnetization peak (TR≃0.9 TG for 4% Ag:Mn).Keywords
This publication has 9 references indexed in Scilit:
- The magnetic field dependence of the susceptibility peak of some spin glass materialsJournal of Physics F: Metal Physics, 1980
- Transition from ferromagnetism to spin glass orderingJournal of Applied Physics, 1979
- Panel discussion: Spin glassesJournal of Applied Physics, 1979
- Low-dc-field susceptibility ofspin glassPhysical Review B, 1979
- Spin glasses in low DC fields. II. Magnetic viscosityJournal of Physics F: Metal Physics, 1978
- Gold-iron spin glasses in low DC fields. I. Susceptibility and thermoremanenceJournal of Physics F: Metal Physics, 1977
- Effect of plastic deformation on mictomagnetism in Cu75Mn25Solid State Communications, 1976
- The low field static susceptibility of the spin glass Au0.96Fe0.04Journal of Physics F: Metal Physics, 1975
- Magnetic Ordering in Gold-Iron AlloysPhysical Review B, 1972