title: Reentrant spin-glass transition in a dilute magnet.
abstract: We perform a large-scale Monte Carlo simulation of a dilute classical Heisenberg model with ferromagnetic nearest neighbor and antiferromagnetic next-nearest neighbor interactions. We found that the model reproduces a reentrant spin-glass transition. That is, as the temperature is decreased, the magnetization increases rapidly below a certain temperature, reaches a maximum value, and then disappears at some lower temperature. The low temperature phase was suggested to be a spin-glass phase that is characterized by ferromagnetic clusters.
authors.affiliation: Department of Applied Physics, Tohoku University, Sendai 980-8579, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Abiko
authors.forename: S
authors.initials: S
authors.lastname: Niidera
authors.forename: F
authors.initials: F
authors.lastname: Matsubara