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Displaying records 1 to 10 of 12 records.
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1. Comment on ŠDetection of Microwave Spin Pumping Using the Inverse Spin Hall EffectŠ
Topic: Magnetics
Published: 1/27/2014
Authors: Thomas J Silva, Mathias A. Weiler, Hans Toya Nembach, Justin M Shaw
Abstract: In a recent Letter, Hahn et al. reported on the detection of an ac voltage in a yttrium iron garnet (YIG)/platinum (Pt) bilayer under the condition of parametrically excited resonance. The authors observe an ac voltage at the frequency of the magneti ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915355

2. Critical current and linewidth reduction in spin-torque nano-oscillators by delayed self-injection
Topic: Magnetics
Published: 6/15/2015
Authors: Guru Bahadur S Khalsa, Mark D Stiles, Julie Grollier
Abstract: Based on theoretical models, the dynamics of spin torque nano-oscillators can be substantially modified by re-injecting the emitted signal to the input of the oscillator after some delay. Numerical simulations for vortex magnetic tunnel junctions sho ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918361

3. Development of a multifilament PIT V3Ga conductor for fusion applications
Topic: Magnetics
Published: 6/12/2011
Authors: Najib Cheggour, Theodore C Stauffer, Loren Frederick Goodrich, L. R. Motowidlo, J Distin, P. J. Lee, David C. Larbalestier, A. K. Ghosh
Abstract: Previous studies on V3Ga assert its suitability for use in proposed fusion reactors. V3Ga may outperform Nb3Sn in a fusion reactor environment based on its relatively flat critical-current profile in the 15 T- 20 T range, resilience to applied strain ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907009

4. Electromagnetic Metrology on Concrete and Corrosion
Series: Journal of Research (NIST JRES)
Topic: Magnetics
Published: 6/1/2011
Authors: Sung Kim, Jack T Surek, James R. Baker-Jarvis
Abstract: To go beyond current electromagnetic nondestructive evaluation (NDE) methods for reinforcing bar (rebar) corrosion we are exploring unique magnetic or electric spectral features and whether these might be prominent enough at the concrete cover depth ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907481

5. Metrology of Microstructured Waveguides for Spintronic Applications
Topic: Magnetics
Published: 7/30/2010
Authors: SangHyun S. Lim, Atif A. Imtiaz, Dazhen Gu, Pavel Kabos, Thomas M Wallis
Abstract: Patterned permallay films as a part of a coplanar waveguide (CPW) were fabricated, and the magnetization dynamics of such structures was investigated as fundamental building blocks for magnetic spintronic devices. Anisotropic magneto-resistance (AMR ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904836

6. Microwave Behavior of polymer bonded Iron oxide nanoparticles
Topic: Magnetics
Published: 11/1/2012
Authors: Pavel Kabos, A Caprile, Coisson Marco, F Fiorillo, O M Manu, E. S. Olivetti, M. A. Olariu, Pasquale Massimo, V. A. Scarlatache
Abstract: Samples composed of a polymer matrix were loaded with different fractions from 0 to 30% of Fe oxide magnetic nanoparticles with an average size ranging from 50 to 25 nm. The permittivity and permeability of the composites were determined upon a very ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911682

7. On-wafer Magnetic Resonance of Magnetite Nanoparticles
Topic: Magnetics
Published: 5/11/2015
Authors: Charles Anderson Enright Little, Stephen E Russek, James C Booth, Pavel Kabos, Robert J. Usselman
Abstract: Magnetic resonance measurements of ferumoxytol and TEMPO were made using an on-wafer transmission line technique with a vector network analyzer, allowing for broadband measurements of small sample volumes (4 nl) and a small numbers of spin (1 nmole). ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917816

8. Perpendicular ferromagnetic resonance measurements of damping and Landé g-factor in sputtered (Co^d2^Mn)^d1-x^Ge^dx^ thin films
Topic: Magnetics
Published: 8/8/2011
Authors: Thomas J Silva, Hans Toya Nembach, Justin M Shaw, Michael Schneider, Matt Carey, Stefan Maat, Jeff Childress
Abstract: X-ray diffraction (XRD), magnetometry, and ferromagnetic resonance (FMR) measurements were performed on sputtered thin films of the nominal Heusler alloy (Co^d2^Mn)^d1-x^Ge^dx^ with varying Ge content and annealing temperature. XRD indicates some deg ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906314

9. Phase-Sensitive Detection of Spin Pumping via the ac Inverse Spin Hall Effect
Topic: Magnetics
Published: 10/6/2014
Authors: Thomas J Silva, Justin M Shaw, Hans Toya Nembach, Mathias A. Weiler
Abstract: Sources of pure spin currents are a fundamental building block of spintronic devices. In ferromagnet/normal metal heterostructures, spin currents are generated at ferromagnetic resonance. This is known as spin pumping, where spin currents of both ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915317

10. Radiative damping in wave guide based FMR measured via analysis of perpendicular standing spin waves in sputtered Permalloy films
Topic: Magnetics
Published: 11/17/2015
Authors: Thomas J Silva, Justin M Shaw, Hans Toya Nembach, Mathias Weiler, Martin Schoen
Abstract: The damping α of the spinwave resonances in 75 nm, 120 nm, and 200 nm -thick Permalloy films is measured via vector-network- analyzer ferromagnetic-resonance (VNA-FMR). Inductive coupling between the sample and the waveguide leads to an addi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=919208



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