| Popis: |
Using the effective-field theory, we have investigated the dynamic behavior of a kinetic spin -S Blume Capel model which is an extension of the conventional kinetic Ising model with S >= 1. For integer and half-integer spins, we have evaluated the dynamic phase diagrams. By introducing a constant bias field h(b), we have focused on the emergence of metamagnetic anomalies in dynamic susceptibility versus bias field curves which arise for a narrow range of the bias field. For long periods, a close examination of susceptibility versus bias field data leads to a linear variation in 1/(h(0)-|h(b)(peak)| )-log P curves where P is the field period. This result confirms that |h(b)(peak)| asymptotically approaches the oscillating field amplitude h(0) as 1/ log P in the slow critical dynamics regime. Our calculations indicate that recent findings regarding the DPT in kinetic Ising model also extents to the kinetic Blume-Capel model with arbitrary spin. (C) 2022 Elsevier B.V. All rights reserved. |
