U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 76 - 100 of 3360

Layering of Magnetic Nanoparticles at Amorphous Magnetic Templates with Perpendicular Anisotropy

August 26, 2020
Author(s)
Apurve Saini, Julie Borchers, Sebastian George, Brian B. Maranville, Kathryn L. Krycka, Joseph Dura, Katharina Theis-Brohl, Max Wolff
… nm from dilute water-based ferrofluids onto an amorphous magnetic template with out-ofplane anisotropy. From neutron … show that the particles self-assemble into layers at the magnetic surface. The layers are extremely stable against … layers is determined by and increases with the remanent magnetic moment of the particles. …

Microwave Power Imaging with Ferromagnetic Films Incorporated in Bimaterial Cantilevers

November 1, 2004
Author(s)
Thomas Mitchell (Mitch) Wallis, John M. Moreland, Billy F. Riddle, Pavel Kabos
We report an imaging technique that uses ferromagnetic films incorporated in bimaterial cantilevers for spatially resolved calorimetric detection of microwaves emitted by sources of high frequency (4 to 20 GHz) radiation. The ferromagnetic film absorbs

Magnetic Switching

February 22, 2000
Author(s)
Richard G. Geyer, Pavel Kabos
… hysteresis, magnetic domain, magnetic switching, magnetization, moments, reversal … Magnetic Switching …

Growth & Magnetic Oscillatory Exchange Coupling of Mn/Fe (001) and Fe/Mn/Fe (001)

January 1, 2000
Author(s)
D Tulchinsky, John Unguris, Robert Celotta
… The magnetic ordering and the interlayer exchange coupling in Mn … behaves very much like antiferromagnetic Cr, however the magnetic coupling in the Fe/Mn/Fe(001) sandwich structures is … Journal of Magnetism and Magnetic Materials … Growth & Magnetic Oscillatory Exchange Coupling of Mn/Fe (001) and …

Magnetic Neutron Scattering

October 2, 2012
Author(s)
Jeffrey W. Lynn
… Neutron scattering is a powerful tool to investigate the magnetic structures and spin dynamics of materials. In this tutorial we provide examples of the application of magnetic neutron diffraction using polycrystalline materials, … the spatial arrangement and directions of the atomic magnetic moments, the atomic magnetization density of …

Details of the Sequential Steps in Magnetocaloric Regeneration

June 8, 2005
Author(s)
F Shir, Lawrence H. Bennett, Edward Della Torre, C Mavriplis, L Yanik, Robert D. Shull
We report on the first demonstration of the four sequential steps in magnetocaloric regeneration of a magnetocaloric material: magnetization, warm blow, demagnetization, and cold blow. The experimental results display temperature divergence due to

Optimizing the NIST Magnetic Imaging Reference Sample

September 1, 1997
Author(s)
Paul Rice, Stephen E. Russek, J Hoinville, Michael H. Kelley
… We have further developed the NIST magnetic imaging reference sample to include a magnetic pattern which can indicate the magnetic polarity of a magnetic force microscope tip. Several … Optimizing the NIST Magnetic Imaging Reference Sample …

Spin Polarized Inverse Photoemission Studies of Surface Magnetism and Electron Structure

January 1, 1986
Author(s)
Daniel T. Pierce, A Seiler, J Pena, Robert Celotta
… to study surface and near-surface electronic structure and magnetism. The process, the information obtained, and the … models of how chemisorption induces changes in surface magnetism. Other SPIPES studies, such as the temperature … Journal of Magnetism and Magnetic Materials …

Symmetry-breaking induced surface magnetization in non-magnetic RuO2

September 8, 2025
Author(s)
Quoc Dai Ho, Quang To, Ruiqi Hu, Garnett Bryant, Anderson Janotti
… than room temperature. Previous interpretations of unusual magnetic properties of RuO2 relied on the theoretical … small, indicating the bulk material is likely non-magnetic. This observation is consistent with the delocalized … non-magnetic bulk, RuO2 surface (110) exhibits spontaneous magnetization, which we attribute to the breaking of local …

Dynamic and static magnetic anisotropy in thin-film cobalt zirconium tantalum

October 26, 2004
Author(s)
John P. Nibarger, R Ewasko, Michael Schneider, Thomas J. Silva
… The magnetic anisotropy values of thin amorphous cobalt zirconium … anisotropy is important when using CZT in high-frequency magnetic applications. Static values were obtained with an … Journal of Magnetism and Magnetic Materials … Dynamic and static magnetic anisotropy in thin-film cobalt zirconium tantalum …

Magnetic Particle Imagining with a Cantilever Detector

July 23, 2012
Author(s)
Jacob W. Alldredge, John M. Moreland
… a novel imaging method for the measuring the position and magnetic moment of single micrometer scale particles. Our technique is based on magnetic force microscopy (MFM) with a magnetically hard magnetic tip in a uniform opposing field. By translating the … Magnetic particle imagining, Magnetic Force microscopy, …

Electron Magnetic Resonance: Necessity for a Modified Bloch Equation

October 16, 2008
Author(s)
B- -. Segev, Y B. Band
… We show that a modified Bloch equation for the electronic magnetic moment is necessary when the magnetic moment explicitly contains a diamagnetic contribution (a magnetic field induced magnetic moment) in addition to the … electric and magnetic moments and magnet, electric and magnetic moments …

Manganese-Enhanced Magnetic Resonance Microscopy of Mineralization

October 12, 2021
Author(s)
I Chesnick, T Todorov, J M. Centeno, Dale Newbury, John A. Small, K Potter
… as a calcium surrogate to enhance the sensitivity of the magnetic resonance microscopy (MRM) technique to the … Journal of Magnetic Resonance Imaging … calvaria, electron probe microanalysis, magnetic resonance microscopy, manganese, mineralization, … Manganese-Enhanced Magnetic Resonance Microscopy of Mineralization …

THE CONSTRUCTION AND CHARACTERIZATION OF THE NIST-4 PERMANENT MAGNET SYSTEM

November 9, 2014
Author(s)
Leon S. Chao, Frank C. Seifert, Shisong Li, Darine El Haddad, Stephan Schlamminger, Jon R. Pratt
… to realize the unit of mass at the kilogram level. The magnet system is one of the key components. Our group at the … is currently building a next-generation, permanent-magnet driven watt balance, NIST-4. We describe the construction of the magnet system, characterization of the field profile, and …

Internal Magnetic Structure of Nanoparticles Dominates Time-Dependent Relaxation Processes in a Magnetic Field

June 2, 2015
Author(s)
Cindi L. Dennis, Kathryn L. Krycka, Julie Borchers, Ryan D. Desautels, Johan van Lierop, Natalie F. Huls, Andrew J. Jackson, Cordula Gruettner, Robert Ivkov
… Time-dependent relaxation of nanomagnets, such as magnetic nanoparticles, have applications in many disciplines … can exhibit hysteresis and loss power when exposed to AC magnetic fields. In particular, the responsiveness of magnetic nanoparticles to static and AC magnetic fields has …

Proximity-Driven Enhanced Magnetic Order at Ferromagnetic-Insulator-Magnetic-Topological Insulator Interface

August 17, 2015
Author(s)
Mingda Li, Cui-Zu Chang, Brian Kirby, Michelle E. Jamer, Wenping Cui, Lijun Wu, Peng Wei, Yimei Zhu, Don Heiman, Ju Li, Jagadeesh S. Moodera
… Magnetic exchange driven proximity effect at a magnetic insulator/topological insulator (MI/TI) interface … enhancement of proximity exchange coupling in the MI/magnetic-TI EuS/Sb 2-x V x Te 3 hybrid heterostructure, where … PNR, magnetic multilayers … Proximity-Driven Enhanced Magnetic Order at …

Magnetism and Fermiology of Kagome Magnet YMn6Sn4Ge2

January 7, 2024
Author(s)
Hari Bhandari, Rebecca Dally, Peter E. Siegfried, Resham Regmi, Kirrily Rule, Songxue Chi, Jeffrey Lynn, I. Mazin, Nirmal J. Ghimire
… the magnetic phases, namely the fan-like phase. Tuning the magnetism, and thus the interplay with the electronic states, … Magnetism and Fermiology of Kagome Magnet YMn6Sn4Ge2 …

Controlled Transport of Magnetic Particles Using Soft Magnetic Patterns

November 20, 2008
Author(s)
Richard Conroy, Gary Zabow, John M. Moreland, Alan P. Koretsky
… Inspired by magnetic bubble memory technology, we demonstrate the … manipulation of superparamagnetic beads guided by soft magnetic patterns in a rotating magnetic field. Soft magnetic structures allow complex and … magnetic particles, microfluidics, fluid transport, magnetic …

Magnetic Properties of the Co-Cd60} and Fe-Cd60}Nanocrystalline Magnetic Thin Films

April 21, 2005
Author(s)
L A. Zheng, E V. Barrera, Robert D. Shull
… The basic magnetic properties of Co-Cd60} and Fe-Cd60} nanocrystalline magnetic thin films and the temperature effects of these … results show that the Co-Cd60} films possess an in-plane magnetic anisotropy, but such an anisotropy is not found in … anisotropy, coercivity, magnetic properties, nanocrystalline magnetic thin films, …

Dependence of noise in magnetic tunnel junction sensors on annealing field and temperature

March 7, 2008
Author(s)
Stephen E. Russek, David P. Pappas, Sean Halloran, Lu Yuan, Sy-Hwang Liou, Rui Zhang
… In this study, we investigated the low frequency noise of magnetic tunnel junctions (MTJs) annealed in the temperature range from 265°C to 305°C and magnetic fields up to 7 T, either in helium or hydrogen environments. Our results indicate that the magnetic fluctuators in these MTJs changed their frequency …

Spin Transfer Torques

April 1, 2008
Author(s)
Daniel C. Ralph, Mark D. Stiles
This tutorial article is designed for beginning graduate students who are interested in the physics of spin transfer torques in magnetic devices. We provide an elementary discussion of the mechanism of spin transfer torque, and review the theoretical and

Probing Magnetic Excitations in Co^II^ Single-Molecule Magnets by Inelastic Neutron Scattering

February 27, 2019
Author(s)
Shelby E. Stavretis, Yongqiang Cheng, Luke L. Daemen, Craig Brown, Duncan H. Moseley, Eckhard Bill, Mihail Atanasov, A. J. Ramirez-Cuesta, Frank Neese, Zi-Ling Xue
… metal complex (S = 3/2), displays field-induced slow magnetic relaxation as a single-molecule magnet (SMMs). For 1 … neutron scattering (INS), a unique method to probe magnetic transitions, has been used to probe different magnetic excitations in 1. The direct-geometry, …

Two simple modifications to improve the magnetic field profile in radial magnetic systems

September 12, 2017
Author(s)
Stephan Schlamminger, Shisong Li
… of vertical symmetry. In order to suppress this vertical magnetic field, we propose two modified magnet constructions: … optimization, either proposals can lower the vertical magnetic field by about one magnitude. … Two simple modifications to improve the magnetic field profile in radial magnetic systems …
Displaying 76 - 100 of 3360
Was this page helpful?