Magnetic normal modes of bicomponent permalloy/cobalt structures in the parallel and antiparallel ground state (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Magnetic normal modes of bicomponent permalloy/cobalt structures in the parallel and antiparallel ground state (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1103/PhysRevB.90.024419 (literal)

Alternative label

• Gubbiotti, G.; Malago, P.; Fin, S.; Tacchi, S.; Giovannini, L.; Bisero, D.; Madami, M.; Carlotti, G.; Ding, J.; Adeyeye, A. O.; Zivieri, R. (2014)
  Magnetic normal modes of bicomponent permalloy/cobalt structures in the parallel and antiparallel ground state
  in Physical review. B, Condensed matter and materials physics
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Gubbiotti, G.; Malago, P.; Fin, S.; Tacchi, S.; Giovannini, L.; Bisero, D.; Madami, M.; Carlotti, G.; Ding, J.; Adeyeye, A. O.; Zivieri, R. (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 90 (literal)

Rivista

• Physical review. B, Condensed matter and materials physics (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 9 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 2 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Consiglio Nazionale delle Ricerche (CNR); University of Ferrara; University of Perugia; National University of Singapore (literal)

Titolo

• Magnetic normal modes of bicomponent permalloy/cobalt structures in the parallel and antiparallel ground state (literal)

Abstract

• Two-dimensional arrays of bicomponent structures made of cobalt and permalloy elliptical dots with thickness of 25 nm, length 1 mu m, and width of 225 nm, have been prepared by a self-aligned shadow deposition technique. Brillouin light scattering has been exploited to study the frequency dependence of thermally excited magnetic eigenmodes on the intensity of the external magnetic field, applied along the easy axis of the elements. Several modes have been observed while sweeping the field along the major and minor hysteresis loops, encompassing both the parallel and the antiparallel alignment of the magnetization in adjacent permalloy and cobalt dots. Micromagnetic simulations based on the dynamic matrix method enabled us to successfully reproduce the measured evolution of the frequencies with the field, as well as to identify the spatial profiles of the modes. A marked difference in the field dependence of the frequency of some modes has been observed for parallel and antiparallel magnetization configurations, suggesting the possibility of tuning the dynamic response in a reprogrammable way. The role of both static and dynamic magnetic coupling in determining the mode frequency is discussed in detail by studying the frequency evolution as a function of the gap size between the dots. (literal)

Prodotto di

• MD.P02.016.001 Materia soffice: diffusione elastica ed anelastica di neutroni e raggi-x (MD.P02.016.002) (Modulo)

Autore CNR

• SILVIA TACCHI (Unità di personale interno)
• GIANLUCA GUBBIOTTI (Persona)

Incoming links:

Prodotto

• MD.P02.016.001 Materia soffice: diffusione elastica ed anelastica di neutroni e raggi-x (MD.P02.016.002) (Modulo)

Autore CNR di

• SILVIA TACCHI (Unità di personale interno)
• GIANLUCA GUBBIOTTI (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review. B, Condensed matter and materials physics (Rivista)