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Titolo:
Preparation and magnetic reseach of Co-Ni alloy nanowires array
Autore:
Qing, DH; Peng, Y; Wang, CW; Li, HL;
Indirizzi:
Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China Lanzhou Univ Lanzhou Peoples R China 730000 zhou 730000, Peoples R China Lanzhou Univ, Minist Educ, Appl Magnet Key Lab, Lanzhou 730000, Peoples R China Lanzhou Univ Lanzhou Peoples R China 730000 zhou 730000, Peoples R China
Titolo Testata:
ACTA PHYSICA SINICA
fascicolo: 1, volume: 50, anno: 2001,
pagine: 144 - 148
SICI:
1000-3290(200101)50:1<144:PAMROC>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
CHI
Soggetto:
TEMPLATE;
Keywords:
Co-Ni alloy nanowires; squareness; perpenticular magnetic anisotropy; nanowire arrays;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Qing, DH Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China Lanzhou Univ Lanzhou Peoples R China 730000 00, Peoples R China
Citazione:
D.H. Qing et al., "Preparation and magnetic reseach of Co-Ni alloy nanowires array", ACT PHY C E, 50(1), 2001, pp. 144-148

Abstract

Co-Ni alloy nanowire arrays were prepared by AC electrochemical depositioninto nanoporous anodic alumina oxide (AAO) template with mixed NiSO4 and CoSO4 solution as electrolyte. The microscopy, crystalloid structure and magnetic properties of the Co-Ni alloy nanowires were investigated by transmission electron microscopy (TEM), electron diffraction and vibrating sample magnetometer (VSM) respectively. The TEM and XRD results show that the nanowires in an array are very uniform and very regular, with an aspect ratio varying from 1 to 100, which have (111) and (011) preferred orientations during growth. VSM result shows that such nanowire arrays has a strong perpenticular magnetic anisotropy, the squareness (0.6 - 0.9) and the coercivity(0.63 x 10(5) A/m-0.8 x 105 A/m) of which were very high when the magnetic field was perpendicular to the axis of the nanowire. The coercivity and the squareness were much higher than those of planar Co-Ni alloy thin films. After heat treatment, the squareness of the sample was up to 0.8.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 21:41:12