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.

PUBLICATIONS

Surface Anisotropy of Permalloy in NM/NiFe/NM Multilayers

Published

Author(s)

J O. Rantschler, P J. Chen, Anthony S. Arrott, Robert D. McMichael, William F. Egelhoff Jr., Brian B. Maranville

Abstract

We have measured surface anisotropy in Permalloy (Py) deposited between two layers of normal metal (NM = Ag, Cu, or Ta) by determining the total perpendicular anisotropy using both the frequency and angular dependence of ferromagnetic resonance spectroscopy (FMR). The Py-Ta interface has a surface anisotropy of 0.078 b0.03 mJ/m2 and the Py-Ag and Py-Cu interfaces have surface anisotropies of 0.10 b0.04 mJ/m2. If the surface anisotropy is taken into account on the edges of a 200x100x4 nm3 oval Permalloy element, the switching field is reduced by 15%.
Citation
Journal of Applied Physics
Volume
97
Issue
No. 10
Pub Type
Journals

Keywords

ferromagnetic resonance spectroscopy FMR, permalloy, perpendicular anisotropy, surface anisotropy

Citation

Rantschler, J. , Chen, P. , Arrott, A. , McMichael, R. , Egelhoff, W. and , B. (2005), Surface Anisotropy of Permalloy in NM/NiFe/NM Multilayers, Journal of Applied Physics (Accessed April 18, 2025)

Issues

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

Created May 1, 2005, Updated February 17, 2017