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.

Physics

Magnetics

Search Publications

Search Title, Abstract, Conference, Citation, Keyword or Author

Title

Author

NIST Pub Series

Report Number

Published Date

Min

Max

Displaying 276 - 291 of 291

Spin dynamics and mode structure in nanomagnet arrays: effects of size and thickness on linewidth and damping

May 5, 2009

Author(s)

Justin M. Shaw, Thomas J. Silva, Michael L. Schneider, Robert D. McMichael

We use frequency resolved magneto-optic Kerr effect to probe the spin-dynamics and mode structure in 50 to 200 nm diameter Ni 80Fe 20 nanomagnets ranging from 3 to 10 nm in thickness. We find that the intrinsic Gilbert damping parameter is largely

Broadband Ferromagnetic Resonance Linewidth Measurement of Magnetic Tunnel Junction Multilayers

January 7, 2009

Author(s)

Stephen E. Russek, Ranko R. Heindl, William H. Rippard, Juan F. Sierra, F G. Aliev

Magnetic tunnel junction multilayer films have been characterized with broadband ferromagnetic resonance (FMR) over a frequency range of 1 to 20 GHz. Tunnel junctions were fabricated using Al 2O 3 tunnel barriers and CoFeB/NiFe free layers and underwent a

Collimated spin wave beam generated by a single layer, spin torque nanocontact

April 1, 2008

Author(s)

Mark Hoefer, Thomas J. Silva, M D. Stiles

A model of spin-torque-induced magnetization dynamics based on semiclassical spin diffusion theory for a single-layer nanocontact in presented. The model incorporates effects due to the current-induced Oersted field and predicts the generation of a variety

Multifunctional ferrimagnetic-ferroelectric thin films for microwave applications

June 20, 2007

Author(s)

Ranko R. Heindl, S. Witanachchi, P. Mukherjee, A. Heim, G. Matthews, S. Balachandran, S. Natarajan, T. Weller

Ferrimagnetic and ferroelectric structures based on barium strontium titanate and barium hexaferrite are investigated for potential applications in tunable microwave devices. Thin film bilayers were grown on MgO and sapphire, and their underlying

Mechanisms for the multistep spin reorientation of ultrathin Fe films on Gd

March 31, 2003

Author(s)

A P. Popov, A. V. Anisimov, David P. Pappas

The multistep spin reorientation transition of ultrathin iron films on bulk gadolinium is described theoretically. We find that it is necessary to include cubic terms in the magnetic anisotropy energy expansion in order to explain this phenomenon

Quantitative Studies of Spin-Momentum-Transfer-Induced Excitations in Co/Cu Multilayer Films Using Point-Contact Spectroscopy

February 24, 2003

Author(s)

William Rippard, Matthew Pufall, Thomas J. Silva

We have measured current-induced magnetic excitations in a variety of exchange-coupled Co/Cu multilayers using point-contact spectroscopy. A step in the DC resistance and corresponding peak in dV/dI are observed at a critical current Ic whose value

Spin-Current Induced Magnetotransport in Co/Cu/Co Nanostructures

September 1, 2002

Author(s)

Fred B. Mancoff, Stephen E. Russek

We report measurements on sub-100 nm current-perpendicular-to-place Co/Cu/Co spin-valves. The giant magnetoresistance versus applied magnetic field shows the switching in individual patterned Co nanomagnets. Spin transfer from the spin-polarized current to

Apparatus for spin-polarized inverse photoemission and spin scattering

January 1, 2000

Author(s)

T Komesu, C Waldfried, J Hae-Kyung, David P. Pappas, T Rammer, M E. Johnston, T J. Gay, P. A. Dowben