Damping at normal metal/permalloy interfaces Conference Paper

abstract

• We have determined the Gilbert damping parameter as a function of layer thickness in six sets of samples with either a normal metal (NM)/Permalloy (NiFe) or NM/NiFe/NM structure by measuring the ferromagnetic resonance (FMR) linewidth for all series and correcting for extrinsic broadening effects. In the NM/NiFe samples, we find that increasing the interface roughness increases the damping quadratically from 0.01 at 3 nm to 0.11 at 47 nm, and by controlling the roughness of the copper layer, we have found there is no evidence of increased damping due to the thickness of the copper layer between 100-2050 nm of copper. 2005 IEEE.

authors

• Rantschler, James

published proceedings

• IEEE TRANSACTIONS ON MAGNETICS

author list (cited authors)

• Rantschler, J. O., Maranville, B. B., Mallett, J. J., Chen, P. J., McMichael, R. D., & Egelhoff, W. F.

citation count

• 29

complete list of authors

• Rantschler, JO||Maranville, BB||Mallett, JJ||Chen, PJ||McMichael, RD||Egelhoff, WF

publication date

• October 2005

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE Transactions on Magnetics  Journal

keywords

• Interface Phenomena
• Lossy Systems
• Magnetic Resonance
• Permalloy

Digital Object Identifier (DOI)

• 10.1109/TMAG.2005.854956

start page

• 3523

end page

• 3525

volume

• 41

issue

• 10

URL

• http://dx.doi.org/10.1109/tmag.2005.854956