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Search Publications

NIST Authors in Bold

Displaying 1351 - 1375 of 3361

Spatially-resolved electric-field manipulation of magnetism for CoFeB mesoscopic discs on ferroelectrics

January 17, 2018
Author(s)
You Ba, Yan Liu, Peisen Li, Liang Wu, John Unguris, Daniel T. Pierce, Danni Yang, Ce Feng, Yike Zhang, Hao Wu, Dalai Li, Yuansi Chang, Jinxing Zhang, Xiufeng Han, Jianwang Cai, Ce-Wen Nan, Yonggang Zhao
… electric-field control of magnetism, multiferroic heterostructure, CoFeB discs, … Spatially-resolved electric-field manipulation of magnetism for CoFeB mesoscopic discs on ferroelectrics …

Relative Permeability Measurements for Metal Detector Research

October 12, 2021
Author(s)
Michael D. Janezic, James R. Baker-Jarvis
We examine a measurement method for characterizing the low-frequency relative permeability of ferromagnetic metals commonly used in contraband materials. Besides the conductivity and geometry, the metal's relative permeability is another important variable

Direct-Current Induced Dynamics in Co 90 Fe 10 /Ni 80 Fe 20 Point Contacts

January 16, 2004
Author(s)
William Rippard, Matthew Pufall, Shehzaad F. Kaka, Stephen E. Russek, Thomas J. Silva
We have directly measured coherent high-frequency magnetization dynamics in ferromagnetic films induced by a spin-polarized dc current. The precision frequency can be tuned over a range of several gigahertz by varying the applied current. The frequencies

Design of the DEMO Fusion Reactor Following ITER

July 1, 2009
Author(s)
Geoffrey B. McFadden, Paul R. Garabedian
Runs of the NSTAB equilibrium and stability code show there are many 3D solutions of the advanced tokamak problem subject to axially symmetric boundary conditions. These numerical simulations based on mathematical equations in conservation form predict

Polarization-resolved Raman spectroscopy of \alpha-RuCl3 and evidence of room temperature two-dimensional magnetic scattering

October 14, 2019
Author(s)
Thuc T. Mai, Amber D. McCreary, P. Lampen-Kelley, Nicholas P. Butch, Jeffrey R. Simpson, J.-Q. Yan, S. E. Nagler, D. Mandrus, Angela R. Hight Walker, Rolando Valdes Aguilar
… we argue that this scattering continuum is of magnetic origin that survives all the way up to room temperature, a scale much larger than the magnetic ordering temperature of TN  7 K. … and evidence of room temperature two-dimensional magnetic scattering …

A New Spin on the Doppler Effect

October 17, 2008
Author(s)
Mark D. Stiles, Robert D. McMichael
The coupling between ferromagnetism and electrical current has recently been the object of intense study because of the combination of interesting scientific developments and the potential technological impact. This coupling is mediated by spin current

Reciprocal Space Neutron Imaging

October 12, 2021
Author(s)
D A. Pushin, D G. Cory, Muhammad D. Arif, David L. Jacobson, M Huber
Here we introduce a Fourier based method for phase contrast neutron imag-ing, report its experimental implementation, show results for a 1-D test phan-tom, and outline the reconstruction methodology. This new approach makes useof neutron interferometry to

Interface Engineering to Control Magnetic Field Effects of Organic-Based Devices by Using a Molecular Self-Assembled Monolayer

June 26, 2014
Author(s)
Hyuk-Jae Jang, Sujitra J. Pookpanratana, Alyssa N. Brigeman, Regis J. Kline, James I. Basham, David J. Gundlach, Christina A. Hacker, Oleg A. Kirillov, Oana Jurchescu, Curt A. Richter
… characteristics. Of particular interest are non-magnetic organic semiconductors that show unusual magnetic field effects (MFEs) at small sub-tesla field … Interface Engineering to Control Magnetic Field Effects of Organic-Based Devices by Using a …

Orientation Dependence of the Magnetic Phase Diagram of Yb 2 Ti 2 O 7

May 21, 2020
Author(s)
S. Saubert, A. Scheie, C. Duvinage, J. Kindervater, S. Zhang, H. J. Changlani, Guangyong Xu, S. M. Koohpayeh, O. Tchernyshyov, Collin L. Broholm, C. Pfleiderer
… In the quest to realize a quantum spin liquid (QSL), magnetic long-range order is hardly welcome. Yet it can offer … Orientation Dependence of the Magnetic Phase Diagram of Yb 2 Ti 2 O 7 …

Magnetic Field Effect on the Static Antiferromagnetic Order and Spin Excitations in Underdoped Iron Arsenide Superconductor BaFe 1.92 Ni 0.08 As 2

March 14, 2011
Author(s)
Miaoyin Wang, Huiqian Luo, Meng Wang, Song Xue Chi, Jose Rodriguez Rivera, Deepak Singh, Sung Chang, Jeffrey W. Lynn, Pengcheng Dai
… We use neutron scattering to study the magnetic field effect on the static antiferromagnetic (AF) … below T c = 17 K coincides with application of a 10-T magnetic field in the FeAs-plane, the intensity of the … Magnetic Field Effect on the Static Antiferromagnetic Order …

Comment on Phys. Rev. Lett. 95, 017201 (2005)

October 12, 2021
Author(s)
J A. Bland, S J. Steinmuller, T Trypiniotis, William F. Egelhoff Jr.
In their article High Temperature Ferromagnetism in GaAs-Based Heterostructures with Mn ? Doping , the authors A. M. Nazmul et al. report finding remarkably high Curie temperatures in Mn delta doped GaAs structures. They base their assessment on the

Current Distribution and Transition Width in Superconducting Transition-Edge Sensors

December 13, 2012
Author(s)
Daniel S. Swetz, Douglas A. Bennett, Daniel R. Schmidt, Joel N. Ullom
Present models of the superconducting-to-normal transition in transition-edge sensors (TESs)do not describe the current distribution within a biased TES. This distribution is complicated by normal-metal features that are integral to TES design. We present

Low-field current-hysteretic oscillations in spin-transfer nanocontacts

April 19, 2007
Author(s)
Matthew Pufall, William Rippard, Michael Schneider, Stephen E. Russek
We have measured spin-transfer-driven, large-amplitude, current-hysteretic, low frequency (less than or equal to} 500 MHz), narrowband oscillations in nanocontacts made to spin valve structures. The oscillations occur in zero field, persist up to 5 mT for

Nuclear Spin Incoherent Neutron Scattering from Quantum Well Resonators

July 1, 2019
Author(s)
Max Wolff, Anton Devishvili, Joseph Dura, Franz A. Adlmann, Brian Kitchen, Gunnar K. Palsson, Heikki Palonen, Brian B. Maranville, Charles Majkrzak, Boris P. Toperverg
We report the detection and quantification of nuclear spin incoherent scattering from hydrogen occupying interstitial sites in a thin film of vanadium. The neutron wave field is enhanced in a quantum resonator with magnetically switchable iron boundaries

Implications of the strain irreversibility cliff on the fabrication of particle-accelerator magnets made of restacked-rod-process Nb3Sn wires

April 2, 2019
Author(s)
Najib Cheggour, Theodore C. Stauffer, Loren F. Goodrich, Jolene D. Splett, William Starch, Arup Ghosh
… conflicting requirements on conductors for fabricating magnets. Those intended for the high-luminosity upgrade of … ratio RRR of conductors above 150 to ensure stability of magnets against quenching. This benchmark may compromise the … beyond ε_irr,0. This study suggests that HT of LHC magnets, made of reduced-Sn wires having a Nb/Sn ratio of 3.6 …

The g Factor of the Bound Electron in Hydrogenlike Carbon

January 1, 2001
Author(s)
H Haeffner, N Hermanspahn, H -. Kluge, G Marx, W Quint, S Stahl, T Valenzuela, G Verdu, G Werth
The experimental determination of the magnetic moment of the bound electron in hydrogen-like ions is an important test of the theory of quantum electrodynamics in strong Coulomb fields. It represents a clean test of pure QED effects because it is not very
Displaying 1351 - 1375 of 3361
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