Self-organized synthesis of patterned magnetic nanostructures with in-plane and perpendicular to the plane magnetization

Details Self-organized synthesis of patterned magnetic nanostructures with in-plane and perpendicular to the plane magnetization Self-organized synthesis of patterned magnetic nanostructures with in-plane and perpendicular to the plane magnetization

2010-01-08

arxiv.org/abs/1001.1328v1

Physics

Condensed Matter

Materials Science

22 pages, 6 figures

Scientific paper

Patterned arrays of ferromagnetic nanoparticles of Co, Ni, and Fe_{\text{50}} Co_{\text{50}} have been synthesized from their ultrathin metal films on SiO_{\text{2}} substrate by nanosecond laser-induced self-organization. The morphology, nanostructure, and magnetic behavior of the nanoparticle arrays were investigated by a combination of electron, atomic force, and magnetic force microscopy techniques. Transmission electron microscopy investigations revealed a granular polycrystalline nanostructure, with the number of grains inside the nanoparticle increasing with their diameter. Magnetic force measurements showed that the magnetization direction of the Co and Ni nanoparticles was predominantly out-of-plane while those for the Fe_{\text{50}}Co_{\text{50}} alloy was in the plane of the substrate. This difference in behavior is due to the dominating influence of magnetostrictive energy on the magnetization as a result of residual thermal strain following fast laser processing. Since the magnetostriction coefficient is negative for polycrystalline Co and Ni, and positive for Fe_{\text{50}}Co_{\text{50}}, the tensile residual strain forces the magnetization direction of the negative magnetostriction materials out-of-plane and the positive magnetostriction materials in-plane. This demonstrates a cost-effective non-epitaxial technique for the fabrication of patterned arrays of magnetic nanoparticles with tailored magnetization orientations.

Affiliated with

Also associated with

No associations

Rating

Self-organized synthesis of patterned magnetic nanostructures with in-plane and perpendicular to the plane magnetization does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Self-organized synthesis of patterned magnetic nanostructures with in-plane and perpendicular to the plane magnetization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-organized synthesis of patterned magnetic nanostructures with in-plane and perpendicular to the plane magnetization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-502974