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Search Publications

NIST Authors in Bold

Displaying 251 - 275 of 3361

Nuclear Magnetic Resonance Gyroscopes

November 2, 2010
Author(s)
Elizabeth A. Donley
… Nuclear magnetic resonance gyroscopes(NMRGs)detect rotation as shift … Gyroscopes, Magnetometry, Nuclear Magnetic Resonance … Nuclear Magnetic Resonance Gyroscopes …

Inelastic Neutron Scattering Study of Field Dependence of Magnetic Excitations in CoTiO3

May 28, 2024
Author(s)
Bo Yuan, Ezekiel Horsley, M. B. Stone, Nicholas Butch, Guangyong Xu, Guo-Jiun Shu, J. P. Clancy, Young-June Kim
… a spin reorientation transition driven by an in-plane magnetic field. By carrying out elastic neutron scattering in a magnetic field, we show that the sample transitions from a collinear antiferromagnetic state with multiple magnetic domains at a low field to a mono-domain state with a …

Correlations Between Magnetic Microstructure and Anisotropy with Noise Spectra for CoNi and CoCrTa Thin Film Media

January 1, 1990
Author(s)
M Scheinfein, John Unguris, Daniel T. Pierce, Robert Celotta
… Ni 25 whcih have very different noise characteristics. The magnetic microstructure of thse films was observed with … different normalized values. We suggest that the observed magnetic microstructure can be directly correlated with … Correlations Between Magnetic Microstructure and Anisotropy with Noise Spectra for …

Temporal Memory with Magnetic Racetracks

December 1, 2020
Author(s)
Hamed Vakili, Mohammed N. Sakib, Samiran Ganguly, Mircea Stan, Matthew Daniels, Advait Madhavan, Mark D. Stiles, Avik W. Ghosh
… Skyrmions, bubbles, and domain walls are mobile magnetic configurations considered useful for Boolean data … to use current-induced displacement of these soliton-like magnetic configurations as a native temporal memory in race … need for skyrmion nucleation on the racetrack make these magnetic racetracks a natural memory for low-power, …

Design of the permanent magnet system for NIST-4

December 21, 2012
Author(s)
Stephan Schlamminger
… meet these requirements we decided to employ a permanent magnet system to generate the magnetic flux. A brief overview of the permanent magnet system as well as the considerations that led to its … mass, permanent magnet, Planck constant, watt balance, SI units …

Static and dynamic magnetic properties of sputtered Fe-Ga thin films

May 3, 2017
Author(s)
Daniel B. Gopman, Vimal Sampath, Hasnain Ahmad, Supriyo Bandyopadhyay, Jayasimha Atulasimha
… resonances were observed with the external static magnetic field applied in--plane. The field corresponding to … Static and dynamic magnetic properties of sputtered Fe-Ga thin films …

Enhanced magnetization in proton irradiated Mn3Si2Te6 van der Waals crystals

April 28, 2020
Author(s)
L. M. Martinez, H. Iturriaga, R. Olmos, L. Shao, Y. Liu, Thuc Mai, C. Petrovic, Angela R. Hight Walker, S. R. Singamaneni
… 5×1015, 1×1016, and i1×1018 H+/cm2. We find that the magnetization is significantly enhanced by 53% and 37% in the … after proton irradiation. From the fluence dependence of magnetization, electron paramagnetic resonance spectral … Enhanced magnetization in proton irradiated Mn3Si2Te6 van der Waals …

Magnetic Domain Imaging of a Half Metallic Heusler Alloy in an Unpatterned CoFeB/MgO/Co2FeSi Magnetic Tunnel Junction

September 3, 2020
Author(s)
Daniel Gopman, Yury Kabanov, Robert D. Shull, Philip Pong, Chao Zheng
… of the Co2FeSi Heusler alloy free layer in a pinned magnetic tunnel junction film using magneto-optic indicator … smooth, coherent rotation away from the easy axis, magnetic reversal behavior along the easy axis is strongly … understanding the reversal behavior of patterned Heusler magnetic tunnel junction devices. …

Short-Range Magnetic Correlations in the Highly-Correlated Electron Compound CeCu 4 Ga

September 25, 2014
Author(s)
B. G. Ueland, C. F. Miclea, K. Gofryk, Yiming Qiu, F. Ronning, R. Movshovich, E. D. Bauer, J. S. Gardner, J. D. Thompson
… CeCu 4 Ga which show that it possesses short-range magnetic correlations down to a temperature of T = 0.1 K. A … the resistivity apparently follows T 2 behavior and the ac magnetic susceptibility becomes temperature independent. T* shifts to higher temperatures upon application of a magnetic field, and inelastic neutron scattering data show a …

Influence of the Colloidal Environment on the Magnetic Behavior of Cobalt Nanoparticles

November 6, 2007
Author(s)
Guangjun Cheng, Cindi L. Dennis, Robert D. Shull, Angela R. Hight Walker
… The magnetic properties of 10 nm cobalt (Co) nanoparticles in … K during cooling are observed when an unsaturated external magnetic field is applied. Differential scanning calorimetry … with the melting and freezing of the solvent, DCB. Magnetic measurements of these Co nanoparticles in DCB are …

Sub-Doppler Laser Cooling and Magnetic Trapping of Erbium

November 27, 2007
Author(s)
Andrew J. Berglund, Simone Lee, Jabez J. McClelland
… cooling in our trap, which can persist even in large magnetic fields due to the near degeneracy of two Lande g factors. Furthermore, a continuously loaded magnetic trap is demonstrated where we observe temperatures … and degenerate bosonic and fermionic gases with long-range magnetic dipole coupling. …

Construction, Measurement, Shimming, and Performance of the NIST-4 Magnet System

June 6, 2014
Author(s)
Frank Seifert, Alireza Panna, Leon Chao, Bing Han, Shisong Li, Yusi A. Cao, Darine El Haddad, Stephan Schlamminger, Heeju Choi, Lori Haley
… The magnet system is one of the key elements of a watt balance. … National Institute of Standards and Technology a permanent magnet system was chosen. We describe the detailed construction of the magnet system, first measurements of the field profile, and … mass, permanent magnet, Planck constant, watt balance, SI units …

Short-Range Correlations in the Magnetic Ground State of Na 4 Ir 3 O 8

December 12, 2014
Author(s)
Rebecca Dally, Tom Hogan, Alex Amato, Chris Baines, Jose Rodriguez Rivera, Michael J. Graf, Stephen D. Wilson
… The magnetic ground state of the J eff = 1/2 hyper-Kagome lattice … spin-ice. Our data demonstrate that an inhomogeneous magnetic ground state arises in Na 4 Ir 3 O 8 driven either … Neutron Scattering, Magnetic Materials … Short-Range Correlations in the Magnetic Ground State of Na 4 Ir 3 O 8 …

High-speed switching and rotational dynamics in small magnetic thin-film devices

January 1, 2003
Author(s)
Stephen E. Russek, Shehzaad F. Kaka, Robert McMichael, Michael J. Donahue
… The intent of this chapter is to review high frequency magnetic device measurements and modeling work at NIST which … to support the development of high-speed read sensors, magnetic random access memory, and magnetoelectronic … those devices whose resistance is a function of the magnetic state of the device, which can in turn be controlled …

Magnetic Structure Determination of High-Moment Rate-Earth-Based Laminates

November 29, 2021
Author(s)
D. Potashnikov, E. Caspi, A. Pesach, Q. Tao, J. Rosen, D. Sheptyakov, Hayden Evans, C. Ritter, Z. Salman, P. Bonfa, T. Ouisse, M. Barbier, O. Rivin, A. Keren
… information between the two techniques, we determine the magnetic moment (μ), structure, and dynamic properties of all … Magnetic structure, rare earth … Magnetic Structure Determination of High-Moment …

Interlayer Exchange Coupling

December 13, 2004
Author(s)
Mark D. Stiles
In magnetic multilayers, in which ferromagnetic layers are separated by non-magnetic spacer layers, the magnetizations are coupled by interactions across the spacer layer. One type of coupling, bilinear exchange coupling, originates from the quantum well

Magnetization Reversal in Half-Metallic Epitaxial CrO 2 Films

November 1, 2002
Author(s)
I L. Siu, William F. Egelhoff Jr., D X. Yang, H D. Chopra
… We have investigated the magnetization reversal in thin films of the half-metallic … 2 in the rutile crystal structure with the c-axis(also the magnetization easy-axis), lying in the plane of the film. Direct, real-time observation of the magnetization reversal revealed that magnetization reversal …

Magnetic Technology Division: Programs, Activities, and Accomplishments

December 31, 2002
Author(s)
Ronald B. Goldfarb
… The Magnetic Technology Division develops and disseminates … technology for industries broadly concerned with magnetic information storage and superconductor power. The … Electromagnetic Measurements , Magnetic Recording Measurements, Magnetic Thin Films and Devices, Magnetodynamics, Nanoprobe …

PROGRESS ON MAGNETIC SUSPENSION FOR THE NIST VACUUM-TO-AIR MASS DISSEMINATION SYSTEM

September 3, 2015
Author(s)
Corey A. Stambaugh, Edward C. Mulhern, Eric C. Benck, Zeina J. Kubarych, Patrick J. Abbott
… the standard to air. NIST has been developing a magnetic suspension system for this purpose. This paper … to characterize and improve the performance of the magnetic suspension portion of the system. Effort has been made to accurately describe the magnetic field within the system through simulation and …

Chapter 5: Multiferroics

December 24, 2015
Author(s)
William D. Ratcliff, Jeffrey W. Lynn
Multiferroics are insulating materials that are simultaneously magnetically ordered and ferroelectric. From a fundamental standpoint it is interesting to understand the properties and coupling of these two disparate types of order. These materials could

Magnetic Switch for Integrated Atom Optics

April 1, 2001
Author(s)
D Mueller, Eric A. Cornell, M Prevedelli, P Schwindt, Y J. Wang, D Z. Anderson
… A magnetic waveguide structure allows switching of neutral … output port of an incoming beam. We utilize two different magnetic-guiding schemes to adiabatically manipulate the atom … atom cooling, atom guiding, atom optics, magnetic guides … Magnetic Switch for Integrated Atom Optics …
Displaying 251 - 275 of 3361
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