Soft spin waves and magnetization reversal in elliptical Permalloy nanodots: Experiments and dynamical matrix results (Articolo in rivista)

Type

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

Label

• Soft spin waves and magnetization reversal in elliptical Permalloy nanodots: Experiments and dynamical matrix results (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Alternative label

• Montoncello, F; Giovannini, L; Nizzoli, F; Vavassori, P; Grimsditch, M; Ono, T; Gubbiotti, G; Tacchi, S; Carlotti, G (2007)
  Soft spin waves and magnetization reversal in elliptical Permalloy nanodots: Experiments and dynamical matrix results
  
  (literal)

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

• Montoncello, F; Giovannini, L; Nizzoli, F; Vavassori, P; Grimsditch, M; Ono, T; Gubbiotti, G; Tacchi, S; Carlotti, G (literal)

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

• 76 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy; CNR S3, INFM, Res Ctr, I-44100 Modena, Italy; Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA; Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan; Univ Perugia, Dipartimento Fis, CNISM, I-06123 Perugia, Italy (literal)

Titolo

• Soft spin waves and magnetization reversal in elliptical Permalloy nanodots: Experiments and dynamical matrix results (literal)

Abstract

• We present an experimental and theoretical investigation of magnetization reversal in Permalloy elliptical nanodots under the application of a varying (quasistatic) magnetic field directed along the hard (short) and easy (long) axes of the ellipses. The magnetic response of the particles is investigated with the magneto-optic Kerr effect (MOKE) and Brillouin scattering (BLS). Experimental MOKE results are reproduced by micromagnetic simulations. The spectrum of the normal modes, calculated with the dynamical matrix method, reproduces the BLS results. We find that when an abrupt magnetization switching occurs it is accompanied by a soft magnetic mode (different in the two cases), the symmetry of which determines the initial steps (onset) of the microscopic reversal path. (literal)

Prodotto di

• Nanomagnetismo controllo della dinamica della magnetizzazione in nanomagneti (MD.P06.011.001) (Modulo)

Autore CNR

• Paolo Vavassori (Unità di personale esterno)
• GIOVANNI CARLOTTI (Unità di personale esterno)

Insieme di parole chiave

• Parole chiave di "Soft spin waves and magnetization reversal in elliptical Permalloy nanodots: Experiments and dynamical matrix results" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• Paolo Vavassori (Unità di personale esterno)
• GIOVANNI CARLOTTI (Unità di personale esterno)

Prodotto

• Nanomagnetismo controllo della dinamica della magnetizzazione in nanomagneti (MD.P06.011.001) (Modulo)

Insieme di parole chiave di

• Parole chiave di "Soft spin waves and magnetization reversal in elliptical Permalloy nanodots: Experiments and dynamical matrix results" (Insieme di parole chiave)