http://www.cnr.it/ontology/cnr/individuo/prodotto/ID507
Measurement of spin waves and activation volumes in superparamagnetic Fe films on GaAs(100) (Articolo in rivista)
- Type
- Label
- Measurement of spin waves and activation volumes in superparamagnetic Fe films on GaAs(100) (Articolo in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevB.74.134401 (literal)
- Alternative label
Stamps, RL; Stollo, A; Madami, M; Tacchi, S; Carlotti, G; Gubbiotti, G; Fabrizioli, M; Fujii, J (2006)
Measurement of spin waves and activation volumes in superparamagnetic Fe films on GaAs(100)
in Physical review. B, Condensed matter and materials physics
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Stamps, RL; Stollo, A; Madami, M; Tacchi, S; Carlotti, G; Gubbiotti, G; Fabrizioli, M; Fujii, J (literal)
- Pagina inizio
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- Rivista
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- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Univ Western Australia, Sch Phys, Nedlands, WA 6009, Australia; Univ Perugia, Dipartimento Fis, INFM, I-06123 Perugia, Italy; INFM, CNR, Res Ctr, I-41100 Modena, Italy; Univ Roma La Sapienza, CNR, INFM, Res Ctr SOFT, I-00185 Rome, Italy; INFM, TASC Lab, I-34012 Trieste, Italy (literal)
- Titolo
- Measurement of spin waves and activation volumes in superparamagnetic Fe films on GaAs(100) (literal)
- Abstract
- Spin wave frequencies are observed in ultrathin Fe/GaAs(100) films at temperatures where the spontaneous zero field magnetization is zero. The films exhibit good cyrstalline structure, and the effect of magnetic anisotropies is apparent even though no zero field spin wave energy gap exists. An analysis is given in terms of a superparamagnetic model in which the film is treated as a network of weakly-interacting single domain magnetic islands. A spin wave analysis provides a means to separate measured values of anisotropy parameters from products involving anisotropy and island volume. In this way, a measure of the activation volume associated with superparamagnetic islands is obtained for different Fe film thicknesses. Results suggest that the island lateral area increases with increasing film thickness. (literal)
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- Autore CNR
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