Abstract: We present the results of Monte Carlo studies on the non-equilibrium relaxation dynamics of trilayer magnetic asymmetric heterostructures. A second-order phase transition was observed in this multilayer magnetic structure. The critical properties of ultrathin films are sensitive to the anisotropy effects. A strong dependence on anisotropy was revealed for the hysteresis phenomenon in the trilayer nanostructures. Increasing the value of the anisotropy parameter leads to a broadening of the hysteresis loop, which means an increase in the coercive force and characterizes the ability of a ferromagnet to maintain a magnetized state. Three types of field-dependent magnetization relaxation are observed: monotonic, non-monotonic and oscillatory. Aging effects in the asymmetric multilayer structures were revealed not only at their non-equilibrium critical behavior, but also in a wide range of temperature range of the low-temperature phase. These effects should be taken into account in the practical use of multilayer magnetic structures as elements of spintronics devices with the giant magnetoresistance effect.

Cite: Lgotina D.A. , Prudnikov V.V. , Prudnikov P.V.
Non-equilibrium relaxation dynamics of an asymmetric Co/Cu/Co heterostructure: A Monte Carlo Study
Journal of Physics A: Mathematical and Theoretical. 2025. V.58. 295001 :1-12. DOI: 10.1088/1751-8121/adedd8

Dates:

Submitted:	May 12, 2024
Accepted:	Jul 9, 2025
Published online:	Jul 17, 2025

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