M.W. Shafer, T.R. McGuire
Physics Letters A
The Eu1-xGdxS system goes from ferromagnetism for small x to antiferromagnetism for large x[1]. We have studied the specific heat and the magnetic properties of that system in the concentration range where the Curie-Weiss temperature, cursive-theta sign, changes sign. Both measurements clearly indicate a spin-glass freezing for x ∼ 0.5 and a mixed state for x ≳ 0.6. Ferromagnetic clusters have been observed in both the spin-glass and in the mixed regimes.
M.W. Shafer, T.R. McGuire
Physics Letters A
M.W. Shafer, T.R. McGuire, et al.
Applied Physics Letters
R.J. Gambino, T.R. McGuire, et al.
IEEE Transactions on Magnetics
F. Mehran, J.B. Torrance, et al.
Physical Review B