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NIST Authors in Bold

Displaying 451 - 475 of 3361

Magnetic Levitation System for the Dissemination of a Non-Artifact Based Kilogram

November 27, 2007
Author(s)
Zeina J. Kubarych, Patrick J. Abbott, Edwin R. Williams, Ruimin Liu, Vincent J. Lee
… link air and vacuum mass measurements. This approach uses magnetic levitation along with vacuum and balance technology … kilogram, magnetic levitation, mass … Magnetic Levitation System for the Dissemination of a …

Results from the Magnetic Suspension Mass Comparator for Vacuum-to-Air Mass Dissemination in Support of the Redefinition of the Kilogram

August 1, 2016
Author(s)
Corey A. Stambaugh, Eric C. Benck, Edward C. Mulhern, Patrick J. Abbott, Zeina J. Kubarych
… will be carried out in vacuum. NIST has developed a magnetic suspension mass comparator to disseminate the new … work to characterize and improve the performance of the magnetic suspension portion of the system. A general overview … metrology, magnetic levitation, electromagnetic modeling, calibration, …

The Superconductive Critical Magnetic Field of Beryllium

October 16, 2008
Author(s)
Robert J. Soulen, J H. Colwell, William E. Fogle
… the temperature dependence of the superconductive critical magnetic field of several samples of beryllium from three … BCS model, beryllium, critical magnetic field, superconductivity, transition temperature … The Superconductive Critical Magnetic Field of Beryllium …

Magnetic manipulation of actin orientation, polymerization, and gliding on myosin using superparamagnetic iron oxide particles

January 7, 2011
Author(s)
John M. Moreland
… iron oxide particles (IOPs) and applying a uniform magnetic field to affect actin orientation, polymerization … and gliding on myosin. We show for the first time magnetic manipulation of magnetizable actin filaments at the … molecules and during polymerization. A model for the magnetic alignment and guiding mechanism is proposed based on …

Negligible Magnetic Losses at Low Temperatures in Liquid Phase Epitaxy Grown Y3Fe5O12 Films

May 31, 2023
Author(s)
A. Will-Cole, James L. Hart, Valeria Lauter, Alexander Grutter, Carsten Dubs, Morris Lindner, Timmy Reimann, Nichole R. Valdez, Charles J. Pearce, Todd C. Monson, Judy J. Cha, Don Heiman, Nian X. Sun
… garnet (Y3Fe5O12, YIG) has a unique combination of low magnetic damping, high spin wave conductivity, and insulating … substrate into the Y3Fe5O12 film, and therefore negligible magnetic losses attributed to the slow relaxation mechanism. … low temperature experiments/applications that require low magnetic losses, such as quantum transduction and …

Anisotropic LMN dielectronic resonances from ratios of magnetic-dipole lines

July 13, 2013
Author(s)
Yuri Ralchenko, John D. Gillaspy
… detected in the intensity ratios of extreme-ultraviolet magnetic-dipole lines within ground configurations. The … Large-scale collisional-radiative modeling incorporating magnetic sublevels of autoionizing levels showed the … dielectronic resonances, EBIT, tungsten, magnetic-dipole lines, atomic spectra …

Field-free switching of perpendicular magnetization through spin-orbit torque in antiferromagnet/ferromagnet/oxide structures

July 11, 2016
Author(s)
Young-Wan Oh, Young Min Kim, Hae Yeon Lee, Kyeong-Dong Lee, Chang-Geun Yang, Eun-Sang Park, Ki-Sueng Lee, Kyoung-Whan Kim, Hyun-Woo Lee, Kyung-Jin Lee, Byong-Guk Park
… coupling, allow highly efficient manipulation of magnetization. To date, most experiments have utilized … give field-free, deterministic switching of perpendicular magnetization. Such switching is of critical importance for … Field-free switching of perpendicular magnetization through spin-orbit torque in …

The Suppression of Orange-Peel Coupling in Magnetic Tunnel Junctions by Pre-Oxidation

October 12, 2021
Author(s)
William F. Egelhoff Jr., Robert McMichael, Cindi L. Dennis, Mark D. Stiles, Alexander J. Shapiro, Brian B. Maranville, Cedric J. Powell
… found that pre-oxidation of the bottom Co electrode in magnetic tunnel junctions (MTJs) very effectively suppresses … reported that pre-oxidation of the bottom Co electrode in magnetic tunnel junctions could dramatically suppress the … oxidation of the surface of the top Co layer suppressed magnetic poles at bumps in the surface. The data suggested …

The Effect of Organic Coatings in the Magnetization of CoFe 2 O 4 Nanoparticles

August 4, 2022
Author(s)
Priscyla L. Andrade, Valdeene Silva, Kathryn L. Krycka, Juscelino Leao, I-Lin Liu, Maria P. Silva, J. Albino Aguiar
… anisotropy, high coercivity, moderate saturation magnetization, large magnetostrictive coefficient, excellent … The Effect of Organic Coatings in the Magnetization of CoFe 2 O 4 Nanoparticles …

Extended Abstract: Interfacial Scattering of Hot Electrons in Ultra-Thin Magnetic Films

October 12, 2021
Author(s)
R P. Lu, B A. Morgan, K L. Kavanagh, Cedric J. Powell, P J. Chen, F Serpa, William F. Egelhoff Jr.
… of Spintronics the transport of hot electrons through magnetic thin films seems destined to play a key role. To … microscopy (BEEM) to measure hot-electron transport across magnetic-metal multilayer/semiconductor structures. … microscopy (, hot electrons, spintronics, ultra-thin magnetic films …

Self Assembly of Magnetic Nanoparticles at Silicon Surfaces

June 21, 2015
Author(s)
Katharina Theis-Brohl, Philipp Gutfreund, Alexei Vorobiev, Max Wolff, Boris P. Toperverg, Joseph Dura, Julie Borchers
… Under three conditions, static, under shear and with a magnetic field, the depth profile is extracted. The particles … by a looser packed second layer. In the case of an applied magnetic field the prolate particles experience a torque and … neutron reflectometry, ferrofluid, colloid, Magnetic interactions, self assembly, shear, rheology …

Low-Carrier Density and Fragile Magnetism in a Kondo Lattice System

February 12, 2019
Author(s)
Binod K. Rai, Iain W. H. Oswald, Wenjing Ban, C.-L. Huang, V. Loganathan, A. M. Hallas, M. N. Wilson, G. M. Luke, Leland Harriger, Qingzhen Huang, Y. Li, Sami Dzsaber, Julia Y. Chan, N. L. Wang, Silke Paschen, Jeffrey W. Lynn, Andriy H. Nevidomskyy, Pengcheng Dai, Q. Si, E. Morosan
… of the Kondo effect is discovered, where the fragile magnetism can also be tuned in a non Fermi liquid fashion … Kondo Effect, New Kondo Regime, Fragile Magnetism, Neutron Scattering, Susceptibility, Muon … Low-Carrier Density and Fragile Magnetism in a Kondo Lattice System …

Transition Metal Dichalcogenides: Making Atomic-Level Magnetism Tunable with Light at Room Temperature

December 10, 2023
Author(s)
Valery Ortiz Jimenez, Yen Pham, Da Zhou, Mingzu Liu, Florence Ann Nugera, Vijaysankar Kalappattil, Tatiana Eggers, Khang Hoang, Dinh Loc Duong, Mauricio Terrones, Humberto Rodriguez Gutierrez, Manh-Huong Phan
… and confinement effects in amplifying light-mediated magnetism is demonstrated. We attributed this to photon … will encourage further research in the field of 2D magnetism and establish a novel design of 2D-TMDs and … Transition Metal Dichalcogenides: Making Atomic-Level Magnetism Tunable with Light at Room Temperature …

Progress Towards a Precision Measurement of the Neutron Lifetime Using Magnetically Trapped Ultracold Neutrons

January 1, 2006
Author(s)
P.-N. Seo, Kevin Coakley, J M. Doyle, F H. DuBose, R Golub, E Korobkina, S K. Lamoreaux, Hans Pieter Mumm, C M. O'Shaughnessy, G R. Palmquis, A K. Thompson, Grace L. Yang, L Yang, Paul R. Huffman
… As part of an on-going program utilizing magnetically trapped ultracold neutrons (UCNs,) we are … a Precision Measurement of the Neutron Lifetime Using Magnetically Trapped Ultracold Neutrons …

Metal-Insulator Transition Tuned by Magnetic Field in Bi 1.7 V 8 O 16 Hollandite

May 1, 2017
Author(s)
Amber M. Larson, Brandon Wilfong, Pouya Moetakef, Craig Brown, Peter Zavalij, Efrain E. Rodriguez
… upon entering the insulating state, although no long-range magnetic ordering is observed from neutron diffraction. The … transition is suppressed upon application of an external magnetic field, and this behavior is both hysteretic and … Metal-Insulator Transition Tuned by Magnetic Field in Bi 1.7 V 8 O 16 Hollandite …

Understanding Reentrance in Frustrated Magnets: The Case of the Er 2 Sn 2 O 7 Pyrochlore

December 30, 2021
Author(s)
D. R. Yahne, D. Pereira, L. D. Jaubert, L. D. Sanjeewa, M. Powell, J. W. Kolis, Guangyong Xu, M. Enjalran, M. J. Gingras, K. A. Ross
… the mechanisms responsible for reentrance in frustrated magnets and which may serve as a guide for other reentrant … Understanding Reentrance in Frustrated Magnets: The Case of the Er 2 Sn 2 O 7 Pyrochlore …

Anisotropic damping of the magnetization dynamics in Fe, Ni and Co

May 17, 2010
Author(s)
Daniel Steiauf, Jonas Seib, Manfred Faehnle, Keith Gilmore, Mark D. Stiles
… The Gilbert parameter alpha describing the damping of magnetization dynamics is commonly taken to be an isotropic … of the damping on both the instantaneous direction of the magnetization M(t) (orientational anisotropy) and on the direction of rotation of the magnetization (rotational anisotropy). For small-angle …

Spin transfer switching of spin valve nanopillars using nanosecond pulsed currents

October 29, 2004
Author(s)
Shehzaad F. Kaka, Matthew Pufall, William Rippard, Thomas J. Silva, Stephen E. Russek, Jordan A. Katine, Matt Carey
Spin valve nanopillars are reversed via the mechanism of spin momentum transfer using current pulses applied perpendicular to the film plane of the device. The applied pulses were varied in amplitude from 1.8 to 7.8 mA, and varied in duration within the

Ferromagnetic resonance and damping properties of CoFeB thin films as free layers in MgO-based magnetic tunnel junctions

August 18, 2011
Author(s)
Xiaoyong X. Liu, Wenzhe N. Zhang, Matthew J. Carter, Gang N. Xiao
… a wide range of thickness used as free layers in MgO-based magnetic tunneling junctions, with the technique of broadband … (FMR). We have observed a large interface-induced magnetic perpendicular anisotropy in the thin film limit. … CoFeB, damping, ferromagnetic resonance, magnetic tunnel junctions …
Displaying 451 - 475 of 3361
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