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Displaying records 21 to 27.
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21. Quantitative magnetometry of ferromagnetic nanorods by microfluidic analytical magnetophoresis
Topic: Nanomagnetics
Published: 9/3/2015
Authors: Andrew Lee Balk, Lamar O. Mair, Feng Guo, Carlos M. Hangarter, Pramod Pappachan Mathai, Robert D McMichael, Samuel M Stavis, John NMN Unguris
Abstract: We introduce an implementation of magnetophoresis to measure the absolute magnetization of ferromagnetic nanorods dispersed in fluids, by analyzing the velocity of single nanorods under an applied magnetic field gradient. A microfluidic guideway prev ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915308

22. Roughness induced magnetic inhomogeneity in Co/Ni multilayers: Ferromagnetic resonance and switching properties in nanostructures.
Topic: Nanomagnetics
Published: 11/10/2010
Authors: Justin M Shaw, Hans Toya Nembach, Thomas J Silva
Abstract: We report on the effect roughness has on the magnetic properties of Co/Ni multilayers with perpendicular anisotropy. We can systematically vary the surface roughness and grain size by the variation in the Cu seed layer thickness. The roughness has ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906064

23. Scanning localized magnetic fields in microfluidic device using single spin in nanodiamond
Topic: Nanomagnetics
Published: 2/5/2015
Authors: Jacob M Taylor, K. Lim, Chad Ropp, Benjamin Shapiro, Edo Waks
Abstract: We demonstrate localized magnetometry using a single nitrogen vacancy (NV) center in a microfluidic device. Our approach can manipulate magnetic objects in three dimensions within a liquid environment and also orients their magnetic dipole. A diamond ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915953

24. Spectroscopy and imaging of edge modes in Permalloy nanodisks
Topic: Nanomagnetics
Published: 1/3/2013
Authors: Feng Guo, Lyubov Belova, Robert D McMichael
Abstract: This paper reports spectroscopy and imaging of spin wave modes using ferromagnetic resonance force microscopy (FMRFM) in Permalloy nano-disks with disk diameters that range from 100 nm to 750 nm. The ferromagnetic resonance spectra distinguish multip ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911716

25. Spin Dynamics in the Time and Frequency Domain
Topic: Nanomagnetics
Published: 9/15/2012
Author: Thomas J Silva
Abstract: The current status of experimental approaches to analyze the spin wave dynamics in ferromagnetic nanoscale structures is reviewed. Recent developments in frequency- and field swept spectroscopy to determine the resonant response of nanoscale ferromag ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911698

26. Spin-scattering rates in metallic thin films measured by ferromagnetic resonance damping enhanced by spin-pumping
Topic: Nanomagnetics
Published: 6/12/2015
Authors: Carl T. Boone, Justin M Shaw, Hans Toya Nembach, Thomas J Silva
Abstract: We determined the spin-transport properties of Pd and Pt thin films by measuring the increase in ferromagnetic resonance damping due to spin-pumping in ferromagnetic (FM)-nonferromagnetic metal (NM) multilayers with varying NM thicknesses. The increa ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916038

27. Two dimensional spectroscopic imaging of individual ferromagnetic nanostripes
Topic: Nanomagnetics
Published: 11/6/2012
Authors: Han-Jong H. Chia, Feng Guo, Lyubov Belova, Robert D McMichael
Abstract: We use ferromagnetic resonance force microscopy (FMRFM) to spectroscopically image the edge modes in individual 700 and 400 nm wide Permalloy stripes with a spatial resolution on the order of 200 nm. The imaging clearly identi es some resonances as ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911361



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