The Influence of Anisotropy on the Manifestation of Aging Effects in the Magnetoresistance of Multilayer Structures

Abstract Currently, aging effects occurring in multilayer systems are attracting much attention from researchers. In our research, we report an investigation on the nonequilibrium relaxations of the ferromagnetic-nonmagnetic multilayer $\mathop {\mathrm{Co/Cu/Co}}$ and $\mathop {\mathrm{Pt/Co/Cu/Co/Pt}}$ systems by means of using Monte Carlo simulations that depend on anisotropy, magnetoresistance, and susceptibility. All these parameters are interrelated and have varying degrees of influence on the effects of aging. We researched our Co-layers magnetic system from high-temperature and low-temperature initial states, as well as not only in the critical temperature region, but in a wide low-temperature range. The study was carried out with different types of magnetic anisotropy, which made it possible to identify differences in the behavior of the system depending on the type of anisotropy. We found that in systems exhibiting a dimensional transition, aging effects increase and manifest themselves in a wide low-temperature range, and not only in a narrow near-critical region, which ultimately leads us to a wide range of practical applications of these materials. We have conducted research on the nonequilibrium relaxations of the magnetic multipliers using the Monte Carlo simulation. The present study is located within a series of such research studies.