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 326 - 350 of 3361

Current-induced synchronized switching of magnetization

August 7, 2012
Author(s)
Kyung Jin Lee, Soo-Man Seo
… current with maintaining high thermal stability of the magnetization. It consists of a perpendicular polarizer, a … free-layer, and an additional free-layer having in-plane magnetization. When the current runs perpendicular to the … Current-induced magnetization switching, spin-transfer torque, synchronization …

Highly Tunable Magnetic Phases in Transition-Metal Dichalcogenide Fe 1/3+d NbS 2

April 5, 2022
Author(s)
Shan Wu, Zhijun Xu, Shannon Haley, Sophie Weber, Arani Acharya, Eran Maniv, Yiming Qiu, A. A. Aczel, Nicholas S. Settineri, Jeffrey Neaton, James Analytis, Robert Birgeneau
… from charge order to superconductivity. By introducing magnetic ions into 2H-NbS 2 , the material forms a family of magnetic intercalated TMDCs T x NbS 2 (T = 3d transition … been found to possess intriguing resistance switching and magnetic memory effects coupled to the Neel temperature of TN …

Design and Engineering Colloidal Magnetic Particles for Nanoscale Thermometry

September 2, 2020
Author(s)
Adam J. Biacchi, Thinh Q. Bui, Cindi L. Dennis, Solomon I. Woods, Angela R. Hight Walker
… Thermometry based on magnetic nanoparticles (MNPs) is an emerging technology that … International Journal on Magnetic Particle Imaging … Design and Engineering Colloidal Magnetic Particles for Nanoscale Thermometry …

Magnetic-Field-Induced Dielectric Anomalies in Cobalt-Containing Garnets

April 11, 2022
Author(s)
Abbey J. Neer, Joanna Milam-Guerrero, Veronika A. Fischer, Michelle Zheng, Nicole R. Spence, Clayton Cozzan, Mingqiang Gu, James M. Rondinelli, Craig Brown, Brent C. Melot
… We present a comparative study of the magnetic and crystal chemical proper-ties of two Co 2+ … of the Co-ions explain the differences in the two magnetic structures and their respective properties. … Magnetic-Field-Induced Dielectric Anomalies in …

Strong Correlations between Vacancy and Magnetic Ordering in Superconducting K 0.8 Fe 2-y Se 2

July 1, 2016
Author(s)
Junjie Yang, Chunruo Duan, Qingzhen Huang, Craig Brown, Joerg Neuefeind, Despina Louca
… The debate of whether or not magnetic and non-magnetic phases coexist in the superconducting potassium … proposed to appear in the stoichiometric, non-magnetic phase with the I4/mmm crystal symmetry, the … Strong Correlations between Vacancy and Magnetic Ordering in Superconducting K 0.8 Fe 2-y Se 2 …

Large-angle magnetization dynamics measured by time-resolved ferromagnetic resonance

March 30, 2006
Author(s)
Thomas Gerrits, Michael Schneider, Anthony B. Kos, Thomas J. Silva
… resonance technique was used to investigate the nonlinear magnetization dynamics of a 10 nm thin Permalloy TM film in … and optical techniques were used to observe the resultant magnetization dynamics. We compared data obtained by this … with a decrease in the spatial homogeneity of the magnetization dynamics. This suggests that unstable spin wave …

Chirality from interfacial spin-orbit coupling effects in magnetic bilayers

November 19, 2013
Author(s)
Kyoung-Whan Kim, Hyun-Woo Lee, Kyung Jin Lee, Mark D. Stiles
… space description. The latter reveals the frustration in magnetic ground state. In magnetic bilayers, these chiral effects lead to very … Spintronics, magnetic dynamics, spin-orbit coupling, Rashba interaction, … electrons, Dzyaloshinskii-Moriya interaction, Chirality, magnetic bilayers …

Reduction-Induced Magnetic Behavior in LaFeO3-d Thin Films

March 4, 2024
Author(s)
Nathan Arndt, Eitan Hershkovitz, Labdhi Shah, Kristoffer Kjaernes, Chao-Yao Yang, Purnima Balakrishnan, Mohammed Shariff, Shaun Tauro, Daniel Gopman, Brian Kirby, Alexander Grutter, Thomas Tybell, Honggyu Kim, Ryan Need
… The effect of oxygen reduction on the magnetic properties of LaFeO3−δ (LFO) thin films was studied … Differences in the amount of oxygen lost by LFO and its magnetic behavior were observed in nominally identical LFO … demonstrate an ability to access multiple, distinct magnetic states via oxygen reduction in the same starting …

Magnetic Correlations in the Disordered Ferromagnetic Alloy Ni-V Revealed with Small Angle Neutron Scattering

January 16, 2020
Author(s)
A. Schroeder, S. Bhattarai, A. Gebretsadik, H. Adawi, J.-G. Lussier, Kathryn L. Krycka
… We aim to determine the relevant length scales of magnetic correlations in ferromagnetic samples with low critical temperatures T c that show signs of magnetic inhomogeneities in magnetization and υSR data. The … of long-range order and coexistence of short-range magnetic correlations in this randomly disordered …

Fast Strain Wave Induced Magnetization Changes in Long Cobalt Bars: Domain Motion versus Coherent Rotation

February 11, 2015
Author(s)
S. Davis, Julie Borchers, Brian B. Maranville, S. Adenwalla
… a piezoelectric substrate is shown to rapidly change the magnetization direction in 40 micron wide Co bars with an … of 10 3 . The rapidly alternating strain wave rotates the magnetization away from the long easy axis into the short … direction, via magnetoelastic coupling. Strain-induced magnetization changes have previously been demonstrated in …

Polymer-derived SiCN composites with magnetic properties

November 1, 2003
Author(s)
Atanu Saha, Sandeep R. Shah, Rishi Raj, Stephen E. Russek
… high temperature magnetic materials, magnetic nanocomposites, polymer-derived composites, SiCN … Polymer-derived SiCN composites with magnetic properties …

Local Breaking of Fourfold Rotational Symmetry by Short-Range Magnetic Order in Heavily Overdoped Ba(Fe 1-x Cu x ) 2 As 2

October 11, 2017
Author(s)
Weiyi Wang, Yu Song, Ding Hu, Yu Li, Rui Zhang, Leland Harriger, Wei Tian, Huibo Cao, Pengcheng Dai
… Cu-doped Ba(Fe 1-x Cu x ) 2 As 2 with transport, magnetic susceptibility, and elastic neutron scattering … to}0.553) samples exhibit spin-glass-like behavior in magnetic susceptibility and insulating-like temperature … neutron scattering, we find stripe-type short-range magnetic order in the spin-glass region identified by …

Correlation of Cation Deficiency and Nanostructure to Decreased Magnetism in a Ferroelectric BiMnO 3 Film

August 23, 2019
Author(s)
Daniel M. Pajerowski, Lisa A. Krayer, Hyoungjeen Jeen, Julie Borchers, Amlan Biswas, Bruce Ravel
… in concert provide details of the structure and magnetism that suggest a deficiency of Bi and Mn metals … stabilizes a multiphase system that explains the decreased magnetism. Film nanostructure and strain effects are also … Polarized neutron reflectivity, Oxygen deficiency, magnetism …

Quantum Phase Transitions in a Quasi-One-Dimensional Ising Quantum Magnet in Transverse Fields

April 15, 2021
Author(s)
Xiaowen Zhang, Zheng He, Yiqing Hao, Yao Shen, Shoudong Shen, Yu Feng, Guangyong Xu, Nicholas Butch, Goran J. Nilsen, Wenbin Wang, Jun Zhao
… measurements of the quasi-one-dimensional Ising magnet SrCo 2 V 2 O 8 under transverse fields along the … quantum magnet, neutron scattering, quasi-one-dimensional … Phase Transitions in a Quasi-One-Dimensional Ising Quantum Magnet in Transverse Fields …

Demonstration of high-performance chip-scale magnetic shields

August 14, 2007
Author(s)
Elizabeth A. Donley, Eleanor Hodby, Leo W. Hollberg, John E. Kitching
… We have designed and tested a set of five miniature nested magnetic shields constructed of high-permeability material, … shielding factors (the ratio of external to internal magnetic field) of both individual shields and combinations … of each technique for this task -- measuring a small magnetic field in a restricted volume -- are analysed. …

Iron Oxide Nanoparticles as Positive T1 Contrast Agents for Low-Field Magnetic Resonance Imaging at 64 mT

July 17, 2023
Author(s)
Samuel Oberdick, Kalina Jordanova, John Lundstrom, Giacomo Parigi, Megan Poorman, Gary Zabow, Katy Keenan
… (SPIONs) as positive T1 contrast agents for low-field magnetic resonance imaging (MRI) at 64 millitesla (mT). … were measured using 64 mT MRI, magnetometry and nuclear magnetic resonance dispersion (NMRD) curves. We also measured … for T1-weighted contrast imaging. We also correlate the magnetic and structural properties of the particles with …

Self-assembled Layering of Magnetic Nanoparticles in a Ferrofluid onSilicon Surfaces

January 4, 2018
Author(s)
Katharina Theis-Brohl, Erika C. Vreeland, Andrew Gomez, Dale L. Huber, Apurve Saini, Max Wolff, Brian B. Maranville, Erik Brok, Kathryn L. Krycka, Joseph Dura, Julie Borchers
… onto a silicon surface and the dependence of the resultant magnetic structure with applied field. The nanoparticles … at the surface followed by more loosely-packed ones. The magnetic field dependent magnetization of the individual … Magnetic nanoparticles, Self-Assembly, Neutron Reflectivity, …

Incommensurate Magnetic Orders and Possible Topological Hall Effect in the Square-Net Centrosymmetric EuGa 2 Al 2 System

July 7, 2022
Author(s)
Jaime Moya, Shiming Lei, Eleanor Clements, Caitlin Kengle, Stella Sun, Kevin Allen, Qizhi Li, Y. Peng, Ali Husain, Matteo Mitrano, Matthew Krogstad, Raymond Osborn, Anand Puthirath, Songxue Chi, Lisa Debeer-Schmitt, Jonathan N. Gaudet, P. Abbamonte, Jeffrey Lynn, E. Morosan
… magnet EuGa 2 Al 2 reveals multiple incommensurate magnetic states (AFM1,2,3) in zero field. In applied field, a new magnetic phase (A) is identified from magnetization and … measurements, bounded by two of the H = 0 incommensurate magnetic phases (AFM1,helical and AFM3, cycloidal) with …

Exploring frustrated magnetism with artificial spin ice

September 26, 2016
Author(s)
Ian J. Gilbert, Bojan R. Ilic
… provide insight into the microscopic details of frustrated magnetism because, unlike natural frustrated magnets, the … artificial spin ice, frustrated magnetism, nanomagnetism … Exploring frustrated magnetism with artificial spin ice …

Magneto-optical observation of four-wave scattering in a 15 nm Ni 81 Fe 19 film during large angle magnetization precession

November 14, 2011
Author(s)
Hans T. Nembach, Karen Livesey, Michael Kostylev, Patrica Martin-Pimentel, Sebastian Hermsdoerfer, Britta Leven, Juergen Fassbender, Burkard Hillebrands
… Large angle magnetization precession induced by a short pulsed magnetic … technique with sensitivity to all three components of the magnetization vector. A reduction of the magnitude of the magnetization vector |M| during large angle precession is … magnetization dynamics, nanomagnetics …

Magnetic Particle Self-Assembly at Functionalized Interfaces

April 13, 2021
Author(s)
Apurve Saini, Katharina Theis-Brohl, Alexandros Koutsioubas, Kathryn L. Krycka, Julie Borchers, Max Wolff
… functionalization without and with an out-of-plane magnetic field. For particles of nominal sizes 5 nm, 15 nm … We show that self-assembly is only promoted by a magnetic field if a seed layer is formed at the silicon … once the seed layer is formed and under an out-of-plane magnetic field further wetting layers assemble. These layers …

Spin-phonon coupling and magnetic transition in an organic molecule intercalated Cr2Ge2Te6

July 10, 2024
Author(s)
Angela R. Hight Walker, Thuc Mai, Adam Biacchi
… evidences reveal the intercalation effect on the intrinsic magnetic and electronic transitions in quasi-two-dimensional … the increased effect of spin-phonon interaction in magnetic order-induced lattice distortion. Combined with the … interface. The interplay between spin-phonon coupling and magnetic ordering in van der Waals magnets appeals for …

Continuum of magnetic excitations in the Kitaev honeycomb iridate D3LiIr2O6

March 29, 2025
Author(s)
Thomas Halloran, Yishu Wang, Kemp Plumb, M. B. Stone, Barry Winn, M. K. Graves-Brook, Jose Rodriguez Rivera, Yiming Qiu, Prashant Chauhan, Johannes Knolle, Roderich Moessner, N. Armitage, Tomohiro Takayama, Hidenori Takagi, Collin L. Broholm
… measurements of powder D3(7Li)(193Ir)2O6 reveal low energy magnetic excitations with a scattering cross-section that is broad in ∣Q∣ and energy transfer. The magnetic nature of the excitation spectrum is demonstrated by longitudinally polarized neutron scattering. The total magnetic moment of 1.8(4)μB/Ir inferred from the observed …
Displaying 326 - 350 of 3361
Was this page helpful?