Crossover from pure Ising to random-exchange dominated behavior of the two-dimensional antiferromagnet Rb2Co1-xMgxF4
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Monte Carlo Simulation of a Random-Field Ising Antiferromagnet
Phase transitions in the three-dimensional diluted Ising antiferromagnet in an applied magnetic field are analyzed numerically. It is found that random magnetic field in a system with spin concentration below a certain threshold induces a crossover from second-order phase transition to first-order transition to a new phase characterized by a spin-glass ground state and metastable energy states ...
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تاریخ انتشار 2017