skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Magnetization dynamics of coupled ferromagnetic disks

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northwestern Univ., Evanston, IL (United States). Northwestern-Argonne Inst. for Science and Engineering

The magnetization configuration in two stacked micron-size ferromagnetic disks can assume different equilibrium states depending on the interfacial coupling between the disks. In this paper, I examine the magnetization dynamics in response to an out-of-plane field pulse for different equilibrium states. For antiferromagnetic coupling, the response spectrum generally consists of a lower-frequency part and a higher-frequency part. The former is related to the response of the core region, which has a significant in-plane response coupled to the out-of-plane one; the latter is related to spin waves generated at the edges of the disk. Finally, for a meron structure the response in the two disks to an out-of-plane pulse is also asymmetric.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Contributing Organization:
Northwestern Univ., Evanston, IL (United States)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1356972
Alternate ID(s):
OSTI ID: 1209841
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 92, Issue 5; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (38)

Artificial ‘spin ice’ in a geometrically frustrated lattice of nanoscale ferromagnetic islands journal January 2006
Direct observation of magnetic monopole defects in an artificial spin-ice system journal April 2010
Real-space observation of emergent magnetic monopoles and associated Dirac strings in artificial kagome spin ice journal October 2010
Observing Monopoles in a Magnetic Analog of Ice journal October 2009
Thermal ground-state ordering and elementary excitations in artificial magnetic square ice journal November 2010
Nanoscale structure of the magnetic induction at monopole defects in artificial spin-ice lattices journal May 2011
Magnetic interactions and reversal of artificial square spin ices journal July 2012
Melting artificial spin ice journal March 2012
Dynamics of artificial spin ice: a continuous honeycomb network journal March 2012
Domain dynamics and fluctuations in artificial square ice at finite temperatures journal March 2012
Spectral Analysis of Topological Defects in an Artificial Spin-Ice Lattice journal March 2013
Strong Radiation of Spin Waves by Core Reversal of a Magnetic Vortex and Their Wave Behaviors in Magnetic Nanowire Waveguides journal February 2007
Magnetic vortex core reversal by excitation with short bursts of an alternating field journal November 2006
Reliable low-power control of ultrafast vortex-core switching with the selectivity in an array of vortex states by in-plane circular-rotational magnetic fields and spin-polarized currents journal January 2008
Eigenfrequencies of vortex state excitations in magnetic submicron-size disks journal January 2002
Imaging of spin dynamics in closure domain and vortex structures journal January 2003
Current-Driven Resonant Excitation of Magnetic Vortices journal September 2006
Magnetic vortex oscillator driven by d.c. spin-polarized current journal May 2007
Large microwave generation from current-driven magnetic vortex oscillators in magnetic tunnel junctions journal April 2010
Two circular-rotational eigenmodes and their giant resonance asymmetry in vortex gyrotropic motions in soft magnetic nanodots journal July 2008
Observation of two different oscillation periods in the exchange coupling of Fe/Cr/Fe(100) journal July 1991
Fluctuation mechanism for biquadratic exchange coupling in magnetic multilayers journal November 1991
Topology and Origin of Effective Spin Meron Pairs in Ferromagnetic Multilayer Elements journal April 2013
Magnetic remanent states and magnetization reversal in patterned trilayer nanodots journal October 2005
Direct Observation of Unconventional Topological Spin Structure in Coupled Magnetic Discs journal February 2012
Dynamics and switching processes for magnetic bubbles in nanoelements journal June 2009
Inertia and Chiral Edge Modes of a Skyrmion Magnetic Bubble journal November 2012
Skyrmion ground state and gyration of skyrmions in magnetic nanodisks without the Dzyaloshinsky-Moriya interaction journal August 2013
Dynamics and inertia of skyrmionic spin structures journal February 2015
Paradigm of the time-resolved magneto-optical Kerr effect for femtosecond magnetism journal June 2009
Using photoelectron emission microscopy with hard-X-rays journal June 2001
Microwave absorption measurements using a broad-band meanderline approach journal February 2009
Micromagnetic modeling of spin-wave dynamics in exchange-biased permalloy disks journal October 2007
Vortex-state oscillations in soft magnetic cylindrical dots journal April 2005
Micromagnetic modeling of the magnetization dynamics in a circularly exchange-biased and exchange-coupled ferromagnetic multilayer journal July 2009
Dynamics of coupled vortices in layered magnetic nanodots journal May 2005
Spin torque and critical currents for magnetic vortex nano-oscillator in nanopillars journal April 2011
Spin-torque-induced dynamics at fine-split frequencies in nano-oscillators with two stacked vortices journal March 2015

Cited By (3)

Magnetic excitations of skyrmions in antiferromagnetic-exchange coupled disks journal September 2018
Collective magnetization dynamics in nanoarrays of thin FePd disks journal May 2019
Collective magnetization dynamics in nano-arrays of thin FePd discs text January 2019