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Titolo:
Magnetic anisotropy and domain patterns in electrodeposited cobalt nanowires
Autore:
Henry, Y; Ounadjela, K; Piraux, L; Dubois, S; George, JM; Duvail, JL;
Indirizzi:
CNRS, Inst Phys & Chim Mat Strasbourg, UMR 7504, F-67037 Strasbourg, France CNRS Strasbourg France F-67037 urg, UMR 7504, F-67037 Strasbourg, France Univ Strasbourg 1, F-67037 Strasbourg, France Univ Strasbourg 1 Strasbourg France F-67037 , F-67037 Strasbourg, France Univ Catholique Louvain, Dept Mat Sci & Proc, B-1348 Louvain, Belgium UnivCatholique Louvain Louvain Belgium B-1348 , B-1348 Louvain, Belgium CNRS, Met Phys Lab, UMR 6630, F-86960 Futuroscope, France CNRS Futuroscope France F-86960 b, UMR 6630, F-86960 Futuroscope, France Univ Poitiers, F-86960 Futuroscope, France Univ Poitiers Futuroscope France F-86960 rs, F-86960 Futuroscope, France Thomson CSF, CNRS, UMR 137, Lab Cent Rech Thomson, F-91904 Orsay, France Thomson CSF Orsay France F-91904 ent Rech Thomson, F-91904 Orsay, France CNRS, Inst Mat Nantes, UMR 6502, F-44322 Nantes 03, France CNRS Nantes France 03 st Mat Nantes, UMR 6502, F-44322 Nantes 03, France Univ Nantes, F-44322 Nantes 03, France Univ Nantes Nantes France 03Univ Nantes, F-44322 Nantes 03, France
Titolo Testata:
EUROPEAN PHYSICAL JOURNAL B
fascicolo: 1, volume: 20, anno: 2001,
pagine: 35 - 54
SICI:
1434-6028(200103)20:1<35:MAADPI>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
FORCE MICROSCOPY; MAGNETORESISTANCE; WIRES; REVERSAL; FILMS; PARTICLES; ARRAYS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Henry, Y CNRS, Inst Phys & Chim Mat Strasbourg, UMR 7504, 23 Rue Loess, F-67037 Strasbourg, France CNRS 23 Rue Loess Strasbourg France F-67037 7 Strasbourg, France
Citazione:
Y. Henry et al., "Magnetic anisotropy and domain patterns in electrodeposited cobalt nanowires", EUR PHY J B, 20(1), 2001, pp. 35-54

Abstract

The magnetic anisotropy and domain structure of electrodeposited cylindrical Co nanowires with length of 10 or 20 mum and diameters ranging from 30 to 450 nm are studied by means of magnetization and magnetic torque measurements, as well as magnetic force microscopy. Experimental results reveal that crystal anisotropy either concurs with shape anisotropy in maintaining the Co magnetization aligned along the wire or favours an orientation of the magnetization perpendicular to the wire, hence competing with shape anisotropy, depending on whether the diameter of the wires is smaller or larger than a critical diameter of 50 nm. This change of crystal anisotropy, originating in changes in the crystallographic structure of Co, is naturally foundto strongly modify the zero (or small) field magnetic domain structure in the nanowires. Except for nanowires with parallel-to-wire crystal anisotropy (very small diameters) where single-domain behaviour may occur, the formation of magnetic domains is required to explain the experimental observations. The geometrical restriction imposed on the magnetization by the small lateral size of the wires proves to play an important role in the domain structures formed.

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Documento generato il 05/04/20 alle ore 23:05:40