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Magnetization reversal process in elliptical permalloy nanodots (Articolo in rivista)
- Type
- Label
- Magnetization reversal process in elliptical permalloy nanodots (Articolo in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.tsf.2005.12.178 (literal)
- Alternative label
Carace, F; Vavassori, P; Gubbiotti, G; Tacchi, S; Madami, M; Carlotti, G; Okuno, T (2006)
Magnetization reversal process in elliptical permalloy nanodots
in Thin solid films (Print); Elsevier B.V., Amsterdam (Belgio)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Carace, F; Vavassori, P; Gubbiotti, G; Tacchi, S; Madami, M; Carlotti, G; Okuno, T (literal)
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Univ Ferrara, Dipartimento Fis, CNR, INFM, I-44100 Ferrara, Italy; Univ Roma La Sapienza, Res Ctr, SOFT, INFM,CNR, I-00185 Rome, Italy; Univ Perugia, CNR, INFM, Unita Perugia, I-06123 Perugia, Italy; Univ Perugia, Dipartimento Fis, CNR, INFM, I-06123 Perugia, Italy; Kyoto Univ, Inst Chem Res, Uji 6110011, Japan (literal)
- Titolo
- Magnetization reversal process in elliptical permalloy nanodots (literal)
- Abstract
- Using the Vectorial Magneto-Optic Kerr Effect (V-MOKE) and numerical simulations, we have investigated the magnetization reversal process in arrays of 15-nm-thick Permalloy nanometer-scale dots, having elliptical shape and eccentricity, varying from 1 to 2.5. V-MOKE hysteresis loops revealed that the magnetization reversal is incoherent for elements with eccentricity of 1 and 1.5, while it becomes an almost perfect coherent magnetization rotation for elements with eccentricity equal to 2 and 2.5. In the latter case, the V-MOKE loops agree well with those predicted by the Stoner-Wohlfarth model for particles with uniaxial magnetic anisotropy. We were able to reproduce the V-MOKE results with micromagnetic simulations, gaining a deeper insight into the magnetic configurations that develop during the reversal process. (c) 2006 Elsevier B.V. All rights reserved. (literal)
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