Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Shape Effects in Ferromagnetic Resonance of Nanosize Rectangular Permalloy Arrays

Published

Author(s)

Martha Pardavi-Horvath, Robert D. McMichael

Abstract

In-plane and out-of-plane ferromagnetic resonance measurements were performed on arrays of Permalloy rectangles, prepared by interference lithography. In the absence of crystalline anisotropy, the shape anisotropy dominates the angular dependence of the resonance and the line width. The 60-70 mT in-plane anisotropy follows the increase of the aspect ratio. The uniaxial out-of-plane anisotropy fields are on the order of 500 mT. The linewidth has a strong angular dependence, both in the in- and out-of-plane rotation, ranging from about 17 mT up to 23 mT along the easy and hard axes and decreasing with increasing shape anisotropy. Two distinct resonance modes observed in the perpendicular orientation are associated with the main volume mode and shape mode of magnetostatic origin.
Citation
Shape Effects in Ferromagnetic Resonance of Nanosize Rectangular Permalloy Arrays

Keywords

anisotropy, ferromagnetic resonance, Permalloy rectangles crystalline

Citation

Pardavi-Horvath, M. and McMichael, R. (2008), Shape Effects in Ferromagnetic Resonance of Nanosize Rectangular Permalloy Arrays, Shape Effects in Ferromagnetic Resonance of Nanosize Rectangular Permalloy Arrays (Accessed July 18, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created October 16, 2008