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NIST Authors in Bold

Displaying 426 - 450 of 3361

High harmonics with spatially varying ellipticity for spatially-resolved magnetic spectroscopy

April 17, 2018
Author(s)
Daniel D. Hickstein, Jennifer Ellis, Kevin M. Dorney, Nathan J. Brooks, Christian Gentry, Justin M. Shaw, Quynh Nguyen, Christopher A. Mancuso, Henry C. Kapteyn, Margaret M. Murnane, Carlos Hernandez-Garcia
… ellipticity was characterized using extreme ultraviolet magnetic circular dichroism, which demonstrates that a high … degree of circularity is achieved, reaching 100% near the magnetic M-edge. Then, by using the unique spatial variation … we demonstrate that we can measure spectrally-resolved magnetic dichroism without the use of a spectrometer, which …

Effect of strain, magnetic field and field angle on the critical current density of YBa 2 Cu 3 O 7-d coated conductors

May 18, 2010
Author(s)
Daniel C. van der Laan, J. F. Douglas, John (Jack) W. Ekin, Loren F. Goodrich, Theodore C. Stauffer, Cameron C. Clickner
… A large, magnetic-field-dependent, reversible reduction in critical … conductor experiences large stresses in the presence of a magnetic field. Previous studies have been performed only … of axial compressive and tensile strain and applied magnetic field as well as magnetic field angle, in order to …

Hot-Electron Attenuation Lengths in Ultrathin Magnetic Films

May 1, 2000
Author(s)
R P. Lu, B A. Morgan, K L. Kavanagh, Cedric J. Powell, P J. Chen, F Serpa, W F. Egelhoff
… (BEEM) is used to measure hot electron transport across magnetic metal multilayers. Room temperature measurements in … respectively (with typical standard uncertainties of 10%). Magnetic metal sandwich diodes. (Au/M/Au/Si) show larger ALs. … emission microscopy (, hot-electron attenuation lengths, magnetic metal multilayers, ultra-thin magnetic films …

Structure and Magnetic Properties of the a-NaFeO 2 -Type Honeycomb Compound Na 3 Ni 2 BiO 6

November 15, 2014
Author(s)
Elizabeth M. Seibel, J. H. Roudebush, Hui Wu, Qingzhen Huang, Mazhar N. Ali, Huiwen Ji, R. J. Cava
… We present the structure and magnetic properties of Na 3 Ni 2 BiO 6 , which is an ordered … and powder X-ray diffraction. Temperature dependent magnetic susceptibility measurements show Na 3 Ni 2 BiO 6 to … and low-temperature neutron diffraction support the magnetic ordering and are consistent with a TN of 10.4 K. A …

Quantum Disordered Ground State in the Triangular-Lattice Magnet NaRuO 2

July 1, 2023
Author(s)
Brenden R. Ortiz, Paul M. Sarte, Alon H. Avidor, Aurland Hay, Eric Kenney, Alexander I. Kolesnikov, Daniel M. Pajerowski, Adam A. Aczel, Keith M. Taddei, Craig Brown, Chennan Wang, Michael J. Graf, Ram Seshadri, Leon Balents, Stephen Wilson
… effects, here we show that the triangular lattice magnet NaRuO 2 hosts an inherently fluctuating magnetic … Quantum Disordered Ground State in the Triangular-Lattice Magnet NaRuO 2 …

Magnetic Field-Induced Non-Trivial Electronic Topology in Fe 3-x GeTe 2

October 7, 2021
Author(s)
Juan Macy, Danilo Ratkovski, Purnima P. Balakrishnan, Mara Strungaru, Yu-Che Chiu, Aikaterini Flessa, Alex Moon, Wenkai Zheng, Ashley Weiland, Gregory T. McCandless, Julia Y. Chan, Govind S. Kumar, Michael Shatruk, Alexander Grutter, Julie Borchers, William D. Ratcliff, Eun S. Choi, Elton J. Santos, Luis Balicas
… transition possibly associated to the development of bulk magnetic spin textures. Since the anomalous transport … our experimental accuracy, to satisfy the WF law for magnetic-fields µ 0 H applied along its inter-layer … scattering indicate just the progressive canting of the magnetic moments towards the planes followed by their …

Investigating Spin Coupling Across a Three-Dimensional Interface in Core/Shell Magnetic Nanoparticles

March 24, 2020
Author(s)
C. Kons, Manh-Huong Phan, Hariharan Srikanth, D. A. Arena, Zohreh Nemati, Julie Borchers, Kathryn L. Krycka
… We have used a combination of x-ray magnetic circular dichroism (XMCD) spectroscopy and polarized … the distribution of magnetization in heterogenous magnetic nanoparticles (NPs) consisting of a metallic Fecore … Magnetic Nanoparticles, Small Angle Neutron Scattering, …

Design and fabrication of a micromachined multi-spectral magnetic resonance imaging agent

January 20, 2009
Author(s)
Gary Zabow, Alan P. Koretsky, John M. Moreland
… This paper describes the fabrication details of magnetic nano- and microstructures that enable a new class of multispectral magnetic resonance imaging agents. Magnetic field and associated geometrical fabrication … microfabrication, nanoparticles, microparticles, MRI, magnetic resonance imaging, contrast agent …

Magnetic Thin Film Interlaboratory Comparison

March 1, 2003
Author(s)
Fabio C. da Silva, David P. Pappas, C. M. Wang
… A potential low magnetic moment standard reference material (SRM) was studied … interlaboratory comparison, magnetic films, standard reference material … Magnetic Thin Film Interlaboratory Comparison …

Chemically Induced Magnetic Dead Shells in Superparamagnetic Ni Nanoparticles Deduced from Polarized Small-Angle Neutron Scattering

July 17, 2022
Author(s)
Bhaskar Das, Joseph Batley, Kathryn L. Krycka, Julie A. Borchers, Patrick Quarterman, Caroline Korostynski, My Nguyen, Ishita Kamboj, Eray Aydil, Chris Leighton
… Advances in synthesis and characterization of colloidal magnetic nanoparticles (NPs) have yielded great gains in the understanding of their complex magnetic behavior, with implications for numerous … magnetometry. Here, we determine both the chemical and magnetic average internal structure of Ni NP ensembles, via …

Experimental demonstration of a robust training method for strongly defective neuromorphic hardware

December 11, 2023
Author(s)
William Borders, Advait Madhavan, Matthew Daniels, Vasileia Georgiou, Martin Lueker-Boden, Tiffany Santos, Patrick Braganca, Mark Stiles, Jabez J. McClelland, Brian Hoskins
Neural networks are increasing in scale and sophistication, catalyzing the need for efficient hardware. An inevitability when transferring neural networks to hardware is that non-idealities impact performance. Hardware-aware training, where non-idealities

In Vivo Quantitative MRI T1 and T2 Measurements of the Human Brain at 0.064 T

May 20, 2023
Author(s)
Kalina Jordanova, Michele Martin, Stephen Ogier, Megan Poorman, Katy Keenan
Object : Tissue relaxation of the brain is measured in vivo at 0.064 T. This work contributes to research efforts targeted at measuring quantitative magnetic resonance imaging properties of the human body at lower field strengths, thereby increasing the

Perpendicular magnetic anisotropy of two-dimensional Rashba ferromagnets

November 3, 2016
Author(s)
Kyoung-Whan Kim, Kyung Jin Lee, Hyun-Woo Lee, Mark D. Stiles
… from in-plane to perpendicular and back to in-plane magnetic anisotropy as bands are progressively filled. This … external voltage is more important for voltage-controlled magnetic anisotropy than the modulation of the Rashba … magnetic anisotropy, spin-orbit coupling, Rashba effect …

Absolute Magnetic Moment Measurements of Nickel Spheres

May 1, 2000
Author(s)
Robert D. Shull, Robert D. McMichael, L Swartzendruber, Stefan D. Leigh
… of magnetometers are described. The absolute value of the magnetic moment of a set these spheres near room temperature … absolute magnetic moment measurements, Faraday method, magnetometers, … Absolute Magnetic Moment Measurements of Nickel Spheres …

Inter-Kramers Transitions and Spin-Phonon Couplings in a Lanthanide-Based Single-Molecule Magnet

April 6, 2020
Author(s)
Duncan H. Moseley, Shelby E. Stavretis, Zhenhua Zhu, Mei Guo, Craig Brown, Mykhaylo Ozerov, Yongqiang Cheng, Luke L. Daemen, Rachael Richardson, Gary Knight, Komalavalli Thirunavukkuarasu, Anibal J. Ramirez-Cuesta, Jinkui Tang, Zi-Ling Xue
… inelastic neutron scattering, single molecule magnet, Zeeman splitting … Couplings in a Lanthanide-Based Single-Molecule Magnet …

Second Harmonic Magneto-Resistive Imaging to Authenticate and Recover Data from Magnetic Storage Media

March 1, 2005
Author(s)
David P. Pappas, Alexey Nazarov, D Stevenson, Steven Voran, Mike E. Read, Erin M. Gormley, James Cash, Ken Marr, James Ryan
… microscope was developed for high resolution imaging of magnetic tapes and digital media. Second harmonic detection … The second harmonic technique provides high contrast magnetic images of the magnetic storage media using high resolution MR sensors from … data recovery, forensics, magnetic recording, Magneto-resistive imaging …

Complex Magnetic Incommensurability and Electronic Charge Transfer through the Ferroelectric Transition in Multiferroic Co 3 TeO 6

July 25, 2017
Author(s)
Chi-Hung Lee, Chin-Wei Wang, Yang Zhao, Wen-Hsien Li, Jeffrey W. Lynn, A. Brooks Harris, Kirrily Rule, Hung-Duen Yang, Helmuth Berger
… have been carried out to investigate the nature of the magnetic structures and transitions in monoclinic Co 3 TeO 6 … they crystal. Below T M2 - 19.5 K additional commensurate magnetic peaks develop, consistent with the Γ 4 irreducible … which indicates that there are two separate sets of magnetic modulation vectors. Below T M3 = 18 K, this small …

Challenges for Sub-PicoTesla Magnetic-Tunnel-Junction Sensors

October 12, 2021
Author(s)
Robert McMichael, Philip Pong, John Unguris, William F. Egelhoff Jr., A Edelstein, E Nowak, Sean R. Parkin
… The extension of small, inexpensive, low-power magnetic sensors into the sub-picoTesla regime, which is … and SQUIDS, would be a paradigm shift for the field of magnetic sensors. The necessary elements for sub-picoTesla … magnetic sonsor, sub-picotesla, tunnel junction MEMS …

Shape-changing magnetic assemblies as high-sensitivity NMR-readable nanoprobes

April 2, 2015
Author(s)
Gary Zabow, Stephen Dodd, Alan Koretsky
… readable with standard NMR equipment. The sensors comprise magnetic nano-assemblies that reversibly reconfigure in … shifts a million-fold greater than those of traditional magnetic resonance spectroscopies. Inherent adaptability … NMR, MRI, Magnetic resonance imaging, nanosensor, radio-frequency …

Interacting nanoscale magnetic cluster arrays in molybdenum oxide bronzes

May 26, 2017
Author(s)
Joseph A. Hagmann, Son T. Le, Lynn F. Schneemeyer, Joseph A. Stroscio, Tiglet Besara, Theo Siegrist, Curt A. Richter, David G. Seiler
… to a net spin moment of 1μB, and exhibit a unique magnetic exchange between the units. The findings presented … Interacting nanoscale magnetic cluster arrays in molybdenum oxide bronzes …
Displaying 426 - 450 of 3361
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