Titlebook: Relaxation in Complex Systems and Related Topics; Ian A. Campbell,Carlo Giovannella Book 1990 Springer Science+Business Media New York 199

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Dynamic Crossover in Dipolar Ferromagnets long history a series of seemingly contradictory experimental results remained. At first sight one could expect that the exchange interaction plays the major role in the spin dynamics. Taking into account solely the exchange interaction results in the well known dynamical scaling law for the linewi

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Magnetic Excitations in the Disordered System Mg1-xCoxCl2structure and is antiferromagnetic below 24.9K. The or- dered state spin structure is such that spins within a metal layer form a ferromagnetic sheet and the spins in adjacent layers are antiparallel/1/. The spins are confined into the c-plane and the anisotropy within this plane is very small. When

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Attempt at a Comprehensive Description of the Slow Spin Glass Dynamicsry processes imply a time dependent distribution. This makes the determination of the equilibrium response difficult; it introduces at least one extra parameter, the age of the system, which is the time spent below the freezing temperature.