Aging effects in the nonequilibrium behavior of multilayer magnetic superstructures

A numerical Monte Carlo study of the nonequilibrium behavior of multilayer magnetic superstructures consisting of alternating magnetic and nonmagnetic nanolayers is performed. The calculated two-time autocorrelation function and the staggered magnetization of the structure at its evolution starting...

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Bibliographic Details
Published in:JETP letters 2016-12, Vol.104 (11), p.776-783
Main Authors: Prudnikov, V. V., Prudnikov, P. V., Purtov, A. N., Mamonova, M. V.
Format: Article
Language:English
Subjects:
Atomic
Autocorrelation functions
Biological and Medical Physics
Biophysics
Condensed Matter
Ferromagnetic materials
Molecular
Multilayers
Optical and Plasma Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum Information Technology
Solid State Physics
Spintronics
Superstructures
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Summary:A numerical Monte Carlo study of the nonequilibrium behavior of multilayer magnetic superstructures consisting of alternating magnetic and nonmagnetic nanolayers is performed. The calculated two-time autocorrelation function and the staggered magnetization of the structure at its evolution starting from various initial states are analyzed. The analysis reveals aging effects characterized by a slowing down of the relaxation and correlation characteristics in the system with the waiting time. It is shown that, in contrast to bulk magnetic systems, the aging effects in magnetic superstructures arise not only near the ferromagnetic ordering temperature T c in the films but also within a wide temperature range at T ≤ T c .
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364016230132