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Topic Area: Nanomagnetics

Displaying records 11 to 20 of 216 records.
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11. 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

12. 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

13. Spectroscopic defect imaging in magnetic nanostructure arrays
Topic: Nanomagnetics
Published: 7/25/2012
Authors: Han-Jong H. Chia, Feng Guo, Lyubov Belova, Robert D McMichael
Abstract: We report a demonstration of spectroscopic defect imaging in an array of ferromagnetic structures using ferromagnetic resonance force microscopy (FMRFM). The arrray of 200 nm diameter circular dots includes a single oval-shaped ,defect.Š The techni ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910697

14. Micromagnetic investigation of periodic cross-tie/vortex wall geometry
Topic: Nanomagnetics
Published: 5/18/2012
Author: Michael J Donahue
Abstract: A systematic series of micromagnetic simulations on periodic cross-tie/vortex wall structures in an ideal soft film at various width, thickness, and period lengths is performed. For each width and thickness a natural period length is found which has ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911158

15. Micromagnetic Computer Simulated Scaling Effect of S-shaped Permalloy Nano-element on Operating Fields for AND or OR Logic
Topic: Nanomagnetics
Published: 5/1/2012
Author: Michael J Donahue
Abstract: The scaling effect of Permalloy s-shaped element, a modified rectangular element with appendages, on operating fields, Hx and Hy, was investigated by micromagnetic computer simulation for AND or OR logic. The optimized combination of operating fiel ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906214

16. Nanoscale spin wave localization using ferromagnetic resonance force microscopy
Topic: Nanomagnetics
Published: 2/24/2012
Authors: Han-Jong H. Chia, Feng Guo, Lyubov Belova, Robert D McMichael
Abstract: We utilize ferromagnetic resonance force microscopy (FMRFM) to generate and detect multiple localized spin wave modes with spatial dimensions less than 100 nm in ferromagnetic thin films. Localized spin waves are a potentially powerful tool for ima ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909301

17. Determination of spin pumping as a source of linewidth sputtered Co^d90^Fe^d10^/Pd multilayers by use of broadband ferromagnetic resonance spectroscopy
Topic: Nanomagnetics
Published: 2/10/2012
Authors: Justin M Shaw, Hans Toya Nembach, Thomas J Silva
Abstract: We performed a systematic study of damping in Co^d90^Fe^d10^/Pd multilayers by use of broadband (1‹ 60 GHz) ferromagnetic resonance (FMR) spectroscopy in the perpendicular geometry. The data were fitted with the conventional Landau-Lifshitz equation ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909645

18. Formation and structure of 360 and 540 degree domain walls in thin magnetic stripes
Topic: Nanomagnetics
Published: 2/10/2012
Authors: Youngman Jang, Samuel R Bowden, Mark Mascaro, John Unguris, Caroline Ross
Abstract: 360˚, 540˚ and other complex transverse domain walls have been created in narrow Co wires connected to injection pads by cycling a magnetic field perpendicular to the wire length. The composite walls, formed by impingement of 180˚ tran ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910019

19. First-Principles Calculation of the Non-Adiabatic Spin Transfer Torque in Ni and Fe
Topic: Nanomagnetics
Published: 12/16/2011
Authors: Keith Gilmore, Ion Garate, Allan H. MacDonald, Mark D Stiles
Abstract: The magnetization dynamics of a ferromagnet subjected to an electrical current are given by an extension of the Landau-Lifshitz-Gilbert equation that contains two additional terms, the adiabatic and non-adiabatic spin-transfer torques. First-prin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909728

20. TaOx Memristive Devices with Ferromagnetic Electrodes
Topic: Nanomagnetics
Published: 12/7/2011
Authors: Hyuk-Jae Jang, Pragya Rasmi Shrestha, Oleg A Kirillov, Helmut Baumgart, Kin P Cheung, Oana Jurchescu, Curt A Richter
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910359



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