Abstract
The author presents a neutron scattering result on the time evolution of the magnetic order in quasi-two-dimensional dilute Ising antiferromagnetics Rb2CocMg1-cF4. The experiments described were performed for the observation of the time evolution of interplanar ordering following quenching to low temperature from a disordered high-temperature state. The results show that the (100) antiferromagnetic Bragg intensities increase with time as t1/2 at an early stage and as log t at a later stage. A characteristic dependence as a function of time was observed on a macroscopic time scale and the observed behaviour is in good agreement with recently developed statistical theory for a one-dimensional domain growth model.
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