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Article: Macrospin and micromagnetic studies of tilted polarizer spin-torque nano-oscillators
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TitleMacrospin and micromagnetic studies of tilted polarizer spin-torque nano-oscillators
 
AuthorsZhou, Y1
Zhang, H2
Liu, Y2
Åkerman, J4 3
 
Issue Date2012
 
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
 
CitationJournal Of Applied Physics, 2012, v. 112 n. 6, article no. 063903 [How to Cite?]
DOI: http://dx.doi.org/10.1063/1.4752265
 
AbstractUsing nonlinear dynamical systems theory, we analytically studied a spin-torque device in which the magnetization of the polarizer (the fixed layer) is tilted at an arbitrary angle out of the thin-film plane. While the analytical theory can determine the major features of the system, macrospin simulations were employed to demonstrate the unique characteristics of the system, such as the hysteretic switching between bistable states. Material dependencies of the dynamic and static state diagrams were also studied in the framework of the macrospin model. Full-scale micromagnetics simulations were finally performed to reveal more subtle features of the dynamics of such tilted polarizer systems. Both the macrospin and micromagnetics simulations gave quantitatively the same results as our analytical theory. © 2012 American Institute of Physics.
 
ISSN0021-8979
2013 Impact Factor: 2.185
 
DOIhttp://dx.doi.org/10.1063/1.4752265
 
ISI Accession Number IDWOS:000309423200075
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorZhou, Y
 
dc.contributor.authorZhang, H
 
dc.contributor.authorLiu, Y
 
dc.contributor.authorÅkerman, J
 
dc.date.accessioned2012-08-16T05:56:37Z
 
dc.date.available2012-08-16T05:56:37Z
 
dc.date.issued2012
 
dc.description.abstractUsing nonlinear dynamical systems theory, we analytically studied a spin-torque device in which the magnetization of the polarizer (the fixed layer) is tilted at an arbitrary angle out of the thin-film plane. While the analytical theory can determine the major features of the system, macrospin simulations were employed to demonstrate the unique characteristics of the system, such as the hysteretic switching between bistable states. Material dependencies of the dynamic and static state diagrams were also studied in the framework of the macrospin model. Full-scale micromagnetics simulations were finally performed to reveal more subtle features of the dynamics of such tilted polarizer systems. Both the macrospin and micromagnetics simulations gave quantitatively the same results as our analytical theory. © 2012 American Institute of Physics.
 
dc.description.naturepublished_or_final_version
 
dc.identifier.citationJournal Of Applied Physics, 2012, v. 112 n. 6, article no. 063903 [How to Cite?]
DOI: http://dx.doi.org/10.1063/1.4752265
 
dc.identifier.doihttp://dx.doi.org/10.1063/1.4752265
 
dc.identifier.hkuros202149
 
dc.identifier.hkuros217180
 
dc.identifier.isiWOS:000309423200075
 
dc.identifier.issn0021-8979
2013 Impact Factor: 2.185
 
dc.identifier.issue6
 
dc.identifier.scopuseid_2-s2.0-84867063303
 
dc.identifier.urihttp://hdl.handle.net/10722/159785
 
dc.identifier.volume112
 
dc.languageeng
 
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
 
dc.publisher.placeUnited States
 
dc.relation.ispartofJournal of Applied Physics
 
dc.relation.referencesReferences in Scopus
 
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License
 
dc.titleMacrospin and micromagnetic studies of tilted polarizer spin-torque nano-oscillators
 
dc.typeArticle
 
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<description.abstract>Using nonlinear dynamical systems theory, we analytically studied a spin-torque device in which the magnetization of the polarizer (the fixed layer) is tilted at an arbitrary angle out of the thin-film plane. While the analytical theory can determine the major features of the system, macrospin simulations were employed to demonstrate the unique characteristics of the system, such as the hysteretic switching between bistable states. Material dependencies of the dynamic and static state diagrams were also studied in the framework of the macrospin model. Full-scale micromagnetics simulations were finally performed to reveal more subtle features of the dynamics of such tilted polarizer systems. Both the macrospin and micromagnetics simulations gave quantitatively the same results as our analytical theory. &#169; 2012 American Institute of Physics.</description.abstract>
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Author Affiliations
  1. The University of Hong Kong
  2. Tongji University
  3. The Royal Institute of Technology (KTH)
  4. Göteborgs Universitet