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Title: Investigation of Magnetic Properties of Multilayer Thin Films with Spin-Wave Resonance

Abstract

A theory has been developed to simulate spin-wave resonance (SWR) modes in the multilayer systems consisting of alternate magnetic and nonmagnetic layers. An equation of motion of magnetization with Gilbert-type damping parameter for simulating SWR modes was used. It has been realized that the theory developed for the magnetic multilayer films is suitable to study the spin dynamics and extract various magnetic parameters. It has been shown that SWR modes strongly depend on an effective magnetic anisotropy constant (K{sub eff}), interlayer exchange coupling constant (A{sub 12}) and effective magnetization (M{sub eff}). The nature of the effective magnetic anisotropy and interlayer exchange coupling constants has been investigated by using the developed SWR theory in detail. The separation between optic and acoustic modes strongly depends on the magnitude of the interlayer exchange coupling constant, whereas the relative position of the acoustic and optic modes depends on the sign of A{sub 12}. With increasing the interlayer exchange coupling constant, the resonance field of the optic mode decreases (increases) for ferromagnetic (antiferromagnetic) coupling. When the effective magnetic anisotropy constant increases, the resonance field of the acoustic and optic modes increases for both the ferromagnetic and antiferromagnetic couplings. The increasing of the effective magnetization resultsmore » in decreasing of the resonance field of SWR mode at parallel geometry, whereas that of SWR mode increases at the perpendicular geometry. The results are compatible to the other theories and experimental results.« less

Authors:
 [1]
  1. Engineering Faculty Iğdır University, Department of Electrical Electronics Engineering (Turkey)
Publication Date:
OSTI Identifier:
22782482
Resource Type:
Journal Article
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 31; Journal Issue: 7; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1557-1939
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; ANTIFERROMAGNETISM; COUPLING CONSTANTS; COUPLINGS; EQUATIONS OF MOTION; MAGNETIC PROPERTIES; MAGNETIZATION; OPTICAL MODES; RESONANCE; SPIN WAVES; THIN FILMS

Citation Formats

Topkaya, Ramazan. Investigation of Magnetic Properties of Multilayer Thin Films with Spin-Wave Resonance. United States: N. p., 2018. Web. doi:10.1007/S10948-017-4432-7.
Topkaya, Ramazan. Investigation of Magnetic Properties of Multilayer Thin Films with Spin-Wave Resonance. United States. doi:10.1007/S10948-017-4432-7.
Topkaya, Ramazan. Sun . "Investigation of Magnetic Properties of Multilayer Thin Films with Spin-Wave Resonance". United States. doi:10.1007/S10948-017-4432-7.
@article{osti_22782482,
title = {Investigation of Magnetic Properties of Multilayer Thin Films with Spin-Wave Resonance},
author = {Topkaya, Ramazan},
abstractNote = {A theory has been developed to simulate spin-wave resonance (SWR) modes in the multilayer systems consisting of alternate magnetic and nonmagnetic layers. An equation of motion of magnetization with Gilbert-type damping parameter for simulating SWR modes was used. It has been realized that the theory developed for the magnetic multilayer films is suitable to study the spin dynamics and extract various magnetic parameters. It has been shown that SWR modes strongly depend on an effective magnetic anisotropy constant (K{sub eff}), interlayer exchange coupling constant (A{sub 12}) and effective magnetization (M{sub eff}). The nature of the effective magnetic anisotropy and interlayer exchange coupling constants has been investigated by using the developed SWR theory in detail. The separation between optic and acoustic modes strongly depends on the magnitude of the interlayer exchange coupling constant, whereas the relative position of the acoustic and optic modes depends on the sign of A{sub 12}. With increasing the interlayer exchange coupling constant, the resonance field of the optic mode decreases (increases) for ferromagnetic (antiferromagnetic) coupling. When the effective magnetic anisotropy constant increases, the resonance field of the acoustic and optic modes increases for both the ferromagnetic and antiferromagnetic couplings. The increasing of the effective magnetization results in decreasing of the resonance field of SWR mode at parallel geometry, whereas that of SWR mode increases at the perpendicular geometry. The results are compatible to the other theories and experimental results.},
doi = {10.1007/S10948-017-4432-7},
journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = 7,
volume = 31,
place = {United States},
year = {2018},
month = {7}
}