Fabrication and magnetic behaviour of Co film with ordered nanodot arrays

Thin cobalt films with highly ordered Co nanodot arrays have been fabricated by evaporating Co directly onto the surface of a porous anodic alumina template (PAA). The Co nanodots have diameters and heights about 80–110, 30–50 nm, respectively, arranged in a close-placed hexagonal pattern. Magnetic...

Full description

Saved in:
Bibliographic Details
Published inChemical physics letters Vol. 368; no. 5; pp. 696 - 700
Main Authors Zhu, R., Pang, Y.T., Feng, Y.S., Fu, G.H., Li, Y., Zhang, L.D.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 24.01.2003
Elsevier Science
Subjects
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Materials science
Nanoscale materials and structures: fabrication and characterization
Physics
Thin films
Transition elements
Template reaction
Chemical synthesis
Cobalt
Nanostructured materials
Magnetic properties
Online AccessGet full text

Cover

More Information
Summary:Thin cobalt films with highly ordered Co nanodot arrays have been fabricated by evaporating Co directly onto the surface of a porous anodic alumina template (PAA). The Co nanodots have diameters and heights about 80–110, 30–50 nm, respectively, arranged in a close-placed hexagonal pattern. Magnetic measurements reveal that thin Co films with nanodot arrays exhibit uniaxial magnetic anisotropy with the easy magnetization direction parallel to the surface of thin Co film, and the in-plane remanence ratio is up to 0.82, approximately twice as large as that out-of-plane. Coercivity and remanent magnetization of the films with Co dot arrays are much larger than those of unpatterned films.
ISSN:0009-2614
1873-4448
DOI:10.1016/S0009-2614(02)01931-0