Title :
Crystallographic alignment of nanoparticles during self-assembly
Author :
Kan, Shihai ; Sachan, Madhur ; Kirchhoff, Jennifer ; Majetich, Sara A.
Author_Institution :
Dept. of Phys., Carnegie Mellon Univ., Pittsburgh, PA, USA
Abstract :
Novel colloidal chemical methods are employed to synthesize hcp-cobalt nanoparticles, including 12-nm particles that have coercivity at room temperature. The torque from an external field was used to partially align the particles crystallographically during self-assembly. The degree of alignment found from the remanence ratio is interpreted in terms of the Ne´el relaxation time.
Keywords :
coercive force; crystallography; magnetic moments; nanoparticles; self-assembly; 12 nm; coercivity; colloidal chemical methods; crystallographic alignment; nanoparticles; self assembly; Anisotropic magnetoresistance; Cobalt; Crystallography; Magnetic anisotropy; Nanoparticles; Perpendicular magnetic anisotropy; Remanence; Self-assembly; Temperature; Torque; Alignment; array; nanoparticle; self-assembly;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.855333
