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Search Publications

NIST Authors in Bold

Displaying 151 - 175 of 3361

Integrated microfluidic isolation platform for magnetic particle manipulation in biological systems

March 8, 2004
Author(s)
Elizabeth Mirowski, John M. Moreland, Stephen E. Russek, Michael J. Donahue
… fluid-cell platform that consists of patterned magnetic thin-film elements supported on a thin … silicon-nitride membrane. In the presence of an external magnetic field, the field gradients near the magnetic elements are sufficiently large to trap magnetic … biology, force, magnetic particles, magnetic tweezers, manipulation, …

Orbital quantum magnetism in spin dynamics of strongly interacting magnetic lanthanide atoms

May 31, 2018
Author(s)
Ming Li, Eite Tiesinga, Svetlana Kotochigova
… with which to study strong and unconventional quantum magnetism with exotic phases. Here, we use state-of-the-art … closed-coupling simulations to model quantum magnetism for pairs of ultracold spin-6 erbium lanthanide … molecular spin dynamics among erbium atoms. The large magnetic moment and combined orbital angular momentum of the …

Interplay Between the Magnetic and Electric Degrees of Freedom in Multiferroic Co 3 TeO 6

March 28, 2012
Author(s)
Wen-Hsien Li, Chin-Wei Wang, Daniel Hsu, Chi-Hung Lee, Chun-Ming Wu, Chih-Chieh Chou, Hung-Duen Yang, Yang Zhao, Sung Chang, Jeffrey W. Lynn, Helmuth Berger
… Neutron diffraction, magnetic susceptibility, specific heat, and dielectric … to study the interplay between the ferroelectricy and magnetic order. Long range incommensurate magnetic order develops below T ń1 =26 K, which is followed … Multiferroic, Neutron diffraction, Incommensurate Magnetic Order, Commensurate Magnetic Order, Magnetic Phase …

THE NIST MAGNETIC SUSPENSION MASS COMPARATOR: A LOOK AT TYPE B UNCERTAINTY

May 31, 2017
Author(s)
Corey A. Stambaugh
… The magnetic suspension mass comparator is a unique system for … work to understand the systematic error that results from magnetic interactions with the outside world. … SI, kilogram, magnet, magnetic suspension, Type B … THE NIST MAGNETIC SUSPENSION MASS COMPARATOR: A LOOK AT TYPE B …

Symmetry-dependent ultrafast manipulation of nanoscale magnetic domains

December 23, 2022
Author(s)
Nanna Hagstrom, Rahul Jangid, F. N. U. Meera, Diego Turenne, Jeffrey Brock, Erik Lamb, Boyan Stoychev, Justine Schlappa, Natalia Gerasimova, Benjamin Van Kuiken, Rafael Gort, Laurent Mercadier, Loic Le Guyader, Andrey Samartsev, Andreas Scherz, Giuseppe Mercurio, Hermann Durr, Alexander Reid, Monika Arora, Hans Nembach, Justin Shaw, Emmanuelle Jal, Eric Fullerton, Mark Keller, Roopali Kukreja, Stefano Bonetti, Thomas J. Silva, Ezio Iacocca
… to drastically change the energy landscape and quench the magnetic order parameter in magnetic systems. Here, we find a distinct symmetry-dependent … behaviour by use of ultrafast X-ray scattering from magnetic patterns with varying degrees of isotropic and … ultrafast magnetization dynamics, X-ray resonant magnetic scattering, X-ray free electron laser, magnetic …

Quantitative Magnetic Resonance Imaging Phantoms: A Review and the Need for a System Phantom

October 4, 2017
Author(s)
Kathryn E. Keenan, Maureen Ainslie, Alexander J. Barker, Michael A. Boss, Kim M. Cecil, Cecil Charles, Thomas L. Chenevert, Laurence Clarke, Jeffrey L. Evelhoch, Paul Finn, Guoying Liu, Stephen E. Russek, Karl F. Stupic, Joshua D. Trzasko, Chun Yuan, Jie Zheng
… of an MRI machine. The International Society of Magnetic Resonance in Medicine AdHoc Committee on Standards for Quantitative Magnetic Resonance was established in February 2007 to … trials. The goal of the Standards for Quantitative Magnetic Resonance committee was to provide a framework to …

Large-angle magnetization dynamics investigated by vector-resolved magnetization-induced optical second-harmonic generation

December 1, 2004
Author(s)
Thomas Gerrits, Thomas J. Silva, John P. Nibarger, Theo Rasing
… when subjected to pulsed magnetic fields. An improved magnetization-vector-resolved technique utilizing magnetization-induced optical second-harmonic generation was used to measure magnetization dynamics after pulse-field excitation. The … coherence, damping, ferromagnetic resonance, magnetization reversal …

Dysprosium Iron Garnet Thin Films with Perpendicular Magnetic Anisotropy on Silicon

January 1, 2020
Author(s)
Jackson J. Bauer, Ethan R. Rosenberg, Subhajit Kundu, K. Andre Mkhoyan, Patrick Quarterman, Alexander Grutter, Brian Kirby, Julie Borchers, Caroline A. Ross
… Magnetic insulators, such as the rare-earth iron garnets, are … requires growth on Si. This article reports the growth, magnetic and spin transport properties of polycrystalline … films of dysprosium iron garnet (DyIG) with perpendicular magnetic anisotropy (PMA) on Si substrates and as single …

Shaped Magnetogel Microparticles for Multispectral Magnetic Resonance Contrast and Sensing

December 19, 2023
Author(s)
Samuel Oberdick, Stephen Dodd, Alan Koretsky, Gary Zabow
… A promising form of magnetic resonance imaging (MRI) contrast, known as … (i.e., colors) using micro-engineered control of magnetic fields. Manipulation of local magnetic fields is accomplished using microfabricated … Magnetic resonance imaging, microparticles, magnetic …

Magnetic Random Access Memory

August 5, 2016
Author(s)
Michael L. Schneider, P. G. Mather
… Magnetic Random Access Memory (MRAM) possesses a unique … data-storage medium, MRAM differentiates itself from the magnetic data storage discussed in this chapter, since the … reliable performance coupled with nonvolatility that the magnetic nature of the storage element provides. MRAM …

A High-Field, Low-Current Superconducting Ioffe Magnetic Trap

October 12, 2021
Author(s)
S N. Dzhosyuk, C R. Brome, J S. Butterworth, P R. Huffman, C E. Mattoni, D N. McKinsey, R A. Michniak, L Yang, John M. Doyle
… A superconducting Ioffe magnetic trap is designed, built and characterized. The trap … magnetic traps, quadrupole magnets, quench protection, … A High-Field, Low-Current Superconducting Ioffe Magnetic Trap …

Unravelled and Glassy Magnetism in PbFe 1/2 Nb 1/2 O 3 - (2) Neutron Scattering

October 11, 2022
Author(s)
C. Stock, B. Roessli, Peter M. Gehring, Jose Rodriguez Rivera, N. Giles-Donovan, S. Cochran, Guangyong Xu, P. Manuel, M. J. Gutmann, William D. Ratcliff, T. Fennell, Y. Su, X. Li, H. Luo
… We apply neutron scattering to investigate the magnetism in the relaxor ferroelectric PbFe 1/2 Nb 1/2 O 3 … direction. However, on decreasing temperature the magnetism crosses over to a region where magnetic spatial … properties of relaxors PMN and PZN, low temperature magnetism in PFN is unravelled by random fields. …

Robust Ferromagnetism in the Compressed Permanent Magnet Sm 2 Co 17

September 8, 2014
Author(s)
Jason R. Jeffries, L.S.I. Veiga, G. Fabbris, D. Haskel, P. Huang, Nicholas Butch, S.K. McCall, K. Holliday, Z. Jenei, Y. Xiao, P. Chow
… 2 Co 17 displays magnetic properties amenable to permanent magnet applications owing to both the 3d-electrons of Co and … magnet, x-ray, pressure … Robust Ferromagnetism in the Compressed Permanent Magnet Sm 2 Co 17 …

Helical Magnetic Order in MnSi Thin Films

August 22, 2011
Author(s)
E. A. Karhu, S. Kahwaji, M. D. Robertson, H. Fritzche, Brian Kirby, Charles Majkrzak, T. L. Monchesky
… We present a study of the magnetic structure of crystalline MnSi(111) thin films by … and SQUID magnetometry show that the films have helical magnetic order with a pitch vector Q along the film normal. … A and the Dzyaloshinshii constant, D. PNR shows that the magnetic structure has both left and right-handed chiralities …

A Pathway to Optimize the Properties of Magnetocaloric Mn 2-x Fe x P 1-y Ge y ) for Magnetic Refrigeration

February 29, 2016
Author(s)
D. M. Liu, Z. L. Zhang, S. L. Zhou, Qingzhen Huang, X. J. Deng, M. Yue, C. X. Liu, J. X. Zhang, Jeffrey W. Lynn
… Magnetocaloric materials can be useful in magnetic refrigeration applications, but to be practical the … Magnetic Refrigeration, Magnetocaloric, Neutron diffraction, crystal structure, magnetic phase transition, Ferromagnet, Giant Entropy, … Properties of Magnetocaloric Mn 2-x Fe x P 1-y Ge y ) for Magnetic Refrigeration …

Observation of a geometrically constrained domain wall in epitaxial FCC Co small disks

May 1, 2004
Author(s)
C Vaz, L Lopez-Diaz, M Klaui, J Bland, T Monchesky, John Unguris, Z Cui
The magnetic nanostructure of epitaxial FCC Co/Cu(0 0 1) circular elements (1.7 m in diameter) has been imaged with scanning electron microscopy with polarization analysis. A closed flux configuration (quadrant configuration) is observed for most of the

Interfacial magnetic anisotropy from a 3-dimensional Rashba substrate

July 18, 2016
Author(s)
Junwen Li, Paul M. Haney
… We study the magnetic anisotropy which arises at the interface between a … an electric field, and we propose that the interfacial magnetic anisotropy could provide a mechanism for electrical control of the magnetic orientation. … magnetic anisotropy … Interfacial magnetic anisotropy from a 3-dimensional Rashba substrate …

Magnetic Correlations of Iron Oxide Nanoparticles as Probed by Polarized SANS in Stretched Magnetic Nanoparticle-Elastomer Composites

January 31, 2022
Author(s)
Samuel Oberdick, Kathryn L. Krycka, Julie Borchers
… We have investigated the magnetic correlations among 7 nm iron oxide nanoparticles … using polarized Small Angle Neutron Scattering (SANS). The magnetic nanoparticle (MNP)-elastomer composite can be … can be used to nondestructively probe the arrangement of magnetic nanoparticles before and after stretching, so that …

Temperature and Field Dependence of High-Frequency Magnetic Noise in Spin Valve Devices

January 6, 2003
Author(s)
N. A. Stutzke, S. L. Burkett, Stephen E. Russek
… is proportional to the imaginary part of the transverse magnetic susceptibility. The fits to the susceptibility yield the ferromagnetic resonance (FMR) frequency and the magnetic damping parameter. The resonant frequency, increases … to the dominant magnetostatic energies. The measured magnetic damping parameter α decreases from 0.016 to 0.006 as …

Modulated Magnetism and Anomalous Electronic Transport in Ce 3 Cu 4 As 4 O 2

August 29, 2016
Author(s)
Jiakui K. Wang, Shan Wu, Yiming Qiu, Jose Rodriguez Rivera, Qingzhen Huang, Collin L. Broholm, E. Morosan
… The complex magnetism and transport properties of tetragonal Ce 3 Cu 4 As … Magnetism, Neutron Scattering, Frustration … Modulated Magnetism and Anomalous Electronic Transport in Ce 3 Cu 4 As …

3:1 Magnetization Plateau and Suppression of Ferroelectric Polarization in an Ising Chain Multiferroic

January 26, 2009
Author(s)
Y.-J. Jo, Seoungsu Lee, E. Choi, H. Yi, William D. Ratcliff, Y. Choi, V. Kiryukhin, S.-W. Cheong, L. Balicas
… (x≃0.96) was studied in magnetic fields of up to 33 T. Magnetization and neutron-scattering measurements reveal … ↑↑↓↓ spin configuration to the ↑↑↑↓ state with a broad magnetization plateau, and then to the ↑↑↑↑ state. The … 3:1 Magnetization Plateau and Suppression of Ferroelectric …
Displaying 151 - 175 of 3361
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