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Search Publications

NIST Authors in Bold

Displaying 1026 - 1050 of 3361

Magnetic-Field Dependence of the Reversible Axial-Strain Effect in Y-Ba-Cu-O Coated Conductors

June 1, 2005
Author(s)
Najib Cheggour, John (Jack) W. Ekin, C. L. H. Thieme
… at 76.5 K as a function of axial tensile strain ε and magnetic field i}B applied parallel to the YBCO (a,b) plane. … in YBCO coated conductors. J c vs. ε epends strongly on magnetic field. The decrease of J c (ε) grows systematically with magnetic field above 2-3 T, and, unexpectedly, the reverse …

Measurement of Dynamic Properties in Thin-Films

December 1, 2001
Author(s)
Thomas J. Silva
I present a summary of the various techniques available for the determination of response times in magnetic recording head materials. In addition, I derive useful equations for the interpretation of data in the context of the Landau-Lifshitz-Gilbert

Exchange Bias Switching in an Antiferromagnet/Ferromagnet Bilayer Driven by Spin-Orbit Torque

December 1, 2020
Author(s)
Shouzhong Peng, Daoqian Zhu, Weixiang Li, Hao Wu, Alexander Grutter, Dustin A. Gilbert, Jiaqi Lu, Danrong Xiong, Wenlong Cai, Padraic Shafer, Kang L. Wang, Weisheng Zhao
Electrical manipulation of exchange bias and magnetization in antiferromagnet/ferromagnet thin films has been of great interest in recent years. Here, we experimentally demonstrate current-induced switching of exchange bias in perpendicularly magnetized

Interface-generated spin currents

September 26, 2018
Author(s)
Vivek P. Amin, Jan Zemen, Mark D. Stiles
Transport calculations based on ab-initio band structures reveal large interface-generated spin currents at Co/Pt, Co/Cu, and Pt/Cu interfaces. These spin currents are driven by in-plane electric fields but flow out-of-plane, and can have similar strengths

Electron Beam Stimulated Spin Reorientation

May 15, 2003
Author(s)
T L. Monchesky, John Unguris, Robert Celotta
Using Scanning Electron Microscopy with Polarization Analysis (SEMPA), we observed the electron beam induced switching of the magnetic state of epitaxial single-crystal Fe(110) films grown on atomically flat cleaved GaAs(110). For low film thickness the

Remanent-magnetization reversal in nickel-manganese alloys

October 1, 1978
Author(s)
Ronald B. Goldfarb, T. Satoh, Carl E. Patton
… field cooled to 4 K, exhibit a reversal in remanent magnetization upon warming. The reversal is dependent on the … Remanent-magnetization reversal in nickel-manganese alloys …

Interdependence Between Training and Magnetization Reversal in Granular Co-CoO Exchange Bias Systems

April 9, 2014
Author(s)
E. Menendez, T. Dias, J. Geshev, J. F. Lopez-Barbera, J. Nogues, R. Steitz, Brian Kirby, Julie Borchers, L.M.C. Pereira, A. Vantomme, K. Temst
… The interdependence between training and magnetization reversal in granular Co-CoO exchange bias … show reduced relative training values and no asymmetry in magnetization reversal (all reversals take place by domain … results in an increased relative training and a magnetization reversal asymmetry between the first descending …

Anomalous Switching Behavior of Antiparallel-Coupled CO Layers Separated by a Super-Thin Ru Spacer

May 15, 2002
Author(s)
V S. Gornakov, Valerian I. Nikitenko, William F. Egelhoff Jr., Robert D. McMichael, Alexander J. Shapiro, Robert D. Shull
The details of the magnetization reversal mechanisms upon field reversal in coupled ferromagnetic CO (2.5 nm)/Ru(0.5 nm)/Co (2.6 nm) trilayers deposited on obliquely sputtered Ta (10.6 nm) underlayers were studied using the magneto-optical indicator film

Ferromagnetic Resonance Detection with a Torsion-mode Atomic-force Microscope

February 1, 2000
Author(s)
M. Loehndorf, John M. Moreland, Pavel Kabos
We have developed a ferromagnetic resonance (FMR) instrument based on a torsion-mode atomic-force microscope (AFM). The instrument measures the torque on a magnetized thin film in a static out-of-plane field perpendicular to the film surface. The magnetic

Magnetic Force Microscopy of Micropatterned Clusters of Superparamagnetic Iron Oxide Nanoparticles

June 5, 2025
Author(s)
Kenzington Kottenbrock, Sierra Reis, Gunjan Agarwal, Samuel Oberdick
… Magnetic force microscopy (MFM) was used to characterize … containing just a few particles. The MFM phase shift from magnetic interactions between the sample and probe tip could … to the theoretical prediction for single particles. Magnetic interactions between the probe tip and the sample …

Enhanced Magnetic Interaction by Face-Shared Hydride Anions in 6H-BaCrO 2 H

August 16, 2021
Author(s)
Kentaro Higashi, Masayuki Ochi, Yusuke Nambu, Takafumi Yamamoto, Taito Murakami, Naoya Yamashina, Cedric Tassel, Yuki Matsumoto, Hiroshi Takatsu, Craig Brown, Hiroshi Kageyama
… Studies on magnetic oxyhydrides have been almost limited to … octahedra, offering a unique opportunity to investigate magnetic interactions based on a θ 90 ° case. Neutron … provides a useful strategy for the extensive control of magnetic interactions by exploiting the difference in the …

Manipulation of magnetic anisotropy through linear piezoelectric response in magnetoelectric heterostructures

November 21, 2016
Author(s)
Daniel B. Gopman, Robert D. Shull, Yury Y. Iunin, Margo Staruch, Shu-Fan Cheng, Konrad Bussmann, Peter Finkel
… The ability to tune both magnetic and electric properties concomitantly in … transduction applications including energy harvesting or magnetic field sensing devices. In this work, … range than binary relaxors. In-plane rotation of the magnetic anisotropy is observed for the FeCo/Ag multilayer …

Strong Ferromagnetism Achieved via Breathing Lattices in Atomically Thin Cobaltites

January 27, 2021
Author(s)
Sisi Li, Qinghua Zhang, Shan Lin, Xiahan Sang, Ryan F. Need, Manuel A. Roldan, Wenjun Cui, Zhiyi Hu, Qiao Jin, Shuang Chen, Jiali Zhao, Jia-Ou Wang, Jiesu Wang, Meng He, Chen Ge, Can Wang, Hui-Bin Lu, Zhenping Wu, Haizhong Guo, Xin Tong, Tao Zhu, Brian Kirby, Lin Gu, Kui-juan Jin, Er-Jia Guo
Low-dimensional quantum materials that retain strong ferromagnetism down to monolayer thickness hold great potential for spintronic applications. However, ferromagnetism in the transition metal oxides decays severely when the thickness is scaled to the

Magnetic Field-Induced Instability of the Cooperative Paramagnetic State in Zn x Co 4-x (OD) 6 Cl 2

May 29, 2012
Author(s)
S. E. Dissanayake, C. Chan, S. Ji, J. Lee, Yiming Qiu, K. C. Rule, B. Lake, Mark Green, M. Hagihala, X. G. Zheng, T. K. Ng, S.-H. Lee
… techniques with and without application of an external magnetic field H, the magnetic ground states of Zn x Co 4 -x(OD) 6 Cl 2 (x=0,1) … Our results show that for x=0, the ground state is a magnetic long ¿range ordered (LRO) state where each … Magnetic Field-Induced Instability of the Cooperative …

Steering Acoustically Propelled Nanowire Motors towards Cells in a Biologically Compatible Environment using Magnetic Fields

December 10, 2013
Author(s)
Suzanne Ahmed, Wei Wang, Lamar O. Mair, Robert D. Fraleigh, Sixing Li, Luz A. Castro, Mauricio Hoyos, Tony J. Huang, Thomas E. Mallouk
… as specific cells and tissues. We demonstrate in vitro magnetic steering of acoustically powered nanorod motors in a … into the electrochemically grown nanowires. An external magnetic field of 15 mT to 40 mT was used to orient the … propelled along their long axes. In the absence of a magnetic field, (300 ± 30) nm diameter, (4.3 ± 0.2) µm long …

Noncollinear 2k Antiferromagnetism in the Zintl Semiconductor Eu5In2Sb6

January 29, 2024
Author(s)
Vincent Morano, Jonathan N. Gaudet, Nicodemos Varnava, Tanya Berry, Thomas Halloran, Chris Lygouras, Xiaoping Wang, Christina M. Hoffman, Guangyong Xu, Jeffrey Lynn, Tyrel McQueen, David Vanderbilt, Collin L. Broholm
Eu5In2Sb6 is an orthorhombic non-symmorphic small band gap semiconductor with three distinct Eu2+ sites and two low-temperature magnetic phase transitions. The material displays one of the greatest (negative) magnetoresistances of known stoichiometric

Manganese (III) porphyrins complexed with P22 virus-like particles as T1-enhanced contrast agents for magnetic resonance imaging

December 21, 2013
Author(s)
Robert J. Usselman
… IX (MnPP) complexes for evaluation as a macromolecular magnetic resonance imaging contrast agent. The resulting … making them interesting alternatives to current magnetic resonance imaging contrast agents. … Bacteriophage P22 virus-like particle (VLP), nuclear magnetic resonance imaging (MRI) contrast agent, T1-enhanced …

Resonant Magnetic Field Control of Elastic Scattering in Cold 85Rb

December 1, 1998
Author(s)
J L. Roberts, N R. Claussen, J P. Burke, C H. Greene, Eric A. Cornell, C E. Wieman
… A magnetic field-dependent Feshbach resonance has been observed … stoms in the F = 2, M = -2 state of 85 Rb. Changing the magnetic field by several Gauss caused the collision rate to … Resonant Magnetic Field Control of Elastic Scattering in Cold 85Rb …
Displaying 1026 - 1050 of 3361
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