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Search Publications

NIST Authors in Bold

Displaying 226 - 250 of 3361

Phase Diagram of Magnetic Nanodisks measured by SEMPA

January 20, 2010
Author(s)
Seok-Hwan Chung, Robert D. McMichael, Daniel T. Pierce, John Unguris
… Microscopy with Polarization Analysis (SEMPA) to image the magnetic domain structures of individual ferromagnetic … and thereby determine the phase diagram of the magnetic ground states in these technologically important magnetic structures. Depending on the nanodisk dimensions, we …

Magnetic Phase Diagram of Magnetoelectric LiMnPO 4

June 14, 2012
Author(s)
Rasmus Toft-Petersen, Niels H. Andersen, Haifeng Li, Jiying Li, Wei Tian, Sergey L. Bud'ko, Thomas B. S. Jensen, Christof Niedermayer, Mark Laver, Oksana Zaharko, Jeffrey W. Lynn, David Vaknin
… in fields applied along the a axis. A refinement of the magnetic structure using neutron diffraction data in the SF … parallel to the a- axis to be nearly along the c-axis at magnetic fields between 4 and 4.7T, depending on temperature. … observe an increased intentsity of the Lorentz broadened magnetic Bragg peaks above T N at the bi-critical fields as …

Development of a thin film magnetic moment reference material

January 1, 2008
Author(s)
Robert R. Owings, Fabio C. Da Silva, David P. Pappas
… of an interlaboratory comparison and development of a magnetic moment reference material. The comparison was … for thin-film standards. Therefore, a set of thin-film low magnetic moment reference samples was produced and will be … determine further development of a traceable thin-film magnetic moment standard. …

Synthesis of Bioconjugated Magnetic Nanoparticles for Magneto-Raman Study

February 1, 2004
Author(s)
Guangjun Cheng, D B. Romero, D Dunmire, Angela R. Hight Walker
… We are investigating the effects of an externally applied magnetic field on the structure and magnetic properties of biomolecules (DNA and proteins). A … over a wide range of temperatures (4.2K to 300K) and magnetic field strengths (0T to 8T). Two synthetic strategies …

Change in the Magnetic Structure of (Bi,Sm)FeO 3 Thin Films at the Morphotropic Phase Boundary Probed by Neutron Diffraction

November 1, 2014
Author(s)
Shingo Maruyama, Varatharajan Anbusathaiah, Amy Fennell, Mechthild Enderle, Ichiro Takeuchi, William D. Ratcliff
… We report on the evolution of the magnetic structure of BiFeO 3 thin films grown on SrTiO 3 substrates as a function of Sm doping. We determined the magnetic structure using neutron diffration. We found that as Sm increases, the magnetic structure evolves from a cycloid to a G-type …

Construction and Performance of the NIST-4 Magnet System

August 24, 2014
Author(s)
Frank C. Seifert, Alireza R. Panna, Leon S. Chao, Yusi A. Cao, Darine El Haddad, Shisong Li, Stephan Schlamminger, Jon R. Pratt, Heeju Choi, Lori Haley
… to realize the unit of mass at the kilogram level. The magnet system is one of the key elements of such an … Institute of Standards and Technology, a permanent magnet system was chosen. We describe the construction of the magnet system, first measurements of the field profile, and …

Magnetic Excitations in the Geometric Frustrated Multiferroic CuCrO 2

September 28, 2011
Author(s)
M. Frontzek, J. T. Haraldsen, A. Podlesnyak, M. Matsuda, A. D. Christianson, R. S. Fishman, A. S. Sefat, Yiming Qiu, John R. Copley, S. Barilo, S. V. Shiryaev, G. Ehlers
… this paper detailed neutron scattering measurements of the magnetic excitation spectrum of CuCrO6d2^ in the ordered … to describe the inelastic excitation spectrum. The magnetic ground state structure generated with our parameter … is crucial to understand the incommensurability of the magnetic structure as well as the spin-charge coupling …

Oscillatory Non-Collinear Magnetism Induced by Interfacial Charge Transfer in Metallic Oxide Superlattices

November 22, 2016
Author(s)
Jason D. Hoffman, Brian Kirby, Jihwan Kwon, Gilberto Fabbris, John W. Freeland, Ivar Martin, Olle G. Heinonen, Paul Steadman, Hua Zhou, Christian M. Schleputz, Suzanne G. E. te Velthuis, Jian-Min Zuo, Anand Bhattacharya
… oxides are promising avenues to realize new forms of magnetism that arise as a result of charge transfer, … Oscillatory Non-Collinear Magnetism Induced by Interfacial Charge Transfer in Metallic …

Temperature and Magnetic Field Dependence of Spin-Ice Correlations in the Pyrochlore Magnet Tb^2^Ti 2 O 7

July 23, 2014
Author(s)
K. Fritsch, E. Kermarrec, Kathryn Aileen Ross, Yiming Qiu, John R. Copley, D. Pomaranski, J. B. Kycia, H. A. Dabkowska, B. D. Gaulin
… We present a parametric study of the diffuse magnetic scattering at (1/2, 1/2, 1/2}) positions in … over most of the Brillouin zone. The concomitant low-lying magnetic spin excitations are weakly dispersive and appear to … with ac-susceptibility measurements. The application of a magnetic field of 0.075 T applied along the [1-10] direction …

Magnetism and Superconductivity in Fe 1+y Te^1-x^Se x

June 18, 2020
Author(s)
J. M. Tranquada, Guangyong Xu, I. A. Zalizyak
… in Fe chalcogenide series where temperature-dependent magnetism in the parent material provided one of the earliest … superconductivity, iron pnictide, neutron scattering, magnetism … Magnetism and Superconductivity in Fe 1+y Te^1-x^Se x …

Magnetic Structure and Dzyaloshinskii-Moriya Interaction in the S=1/2 Helical-Honeycomb Antiferromagnet a-Cu 2 V 2 O 7

July 24, 2015
Author(s)
G. Gitgeatpong, Yang Zhao, M. Avdeev, R. O. Piltz, T. J. Sato, K. Matan
… Magnetic properties of the S = 1/2 quasi-one-dimensional … using magnetization and neutron scattering measurements. Magnetic susceptibility shows a broad peak at 50 K followed … a zigzag chain antiferromagnetically align in the Fd'd'2 magnetic space group. The ordered moment of 0.93(9) υB is …

Self-consistent calculation of spin transport and magnetization dynamics

October 10, 2013
Author(s)
Kyung Jin Lee, Mark D. Stiles, Hyun-Woo Lee, Jung-Hwan Moon, Kyoung-Whan Kim, Seo--Won Lee
… current transfers its spin-angular momentum to a local magnetization, exciting various types of current-induced magnetization dynamics. So far, most studies in this field … have focused on the direct effect of spin transport on magnetization dynamics, but ignored the feedback from the …

A nonlinearity in permanent-magnet systems used in watt balances

June 25, 2014
Author(s)
Shisong Li, Stephan Schlamminger, Jon R. Pratt
… In watt balances that employ permanent magnet systems to generate the magnetic flux the effects of the weighing current on the magnet systems can generate a systematic bias that can lead … the effect of the weighing current on the yoke of the magnet is developed. This model leads to a dependence of the …

Magnetic Properties of Surfaces Investigated by Spin Polarized Electron Beams

January 1, 1986
Author(s)
Daniel T. Pierce
… and carbon monozide on Ni(110), a reduction of the Ni magnetic moment is found, rather than a decrease in exchange … with one CO molecule eliminating on the average the magnetic moment of two Ni atoms. … Magnetic Properties of Low-Dimensional Systems … Magnetic Properties of Surfaces Investigated by Spin …

Interfacial Magnetic Characteristics of Nearly Compensated Gadolinium Iron Garnet

May 4, 2024
Author(s)
Karthik Srinivasan, Alexander Grutter, Thomas Gage, P. Quarterman, Christy Kinane, Andrew Caruana, Guichuan Yu, Javier Garcia-Barriocanal, Sean Langridge, Bethanie Stadler
… currents from thermal gradients, and spin transfertorque magnetic random-access memory using compensated ferrimagnets … of depth profiles or interfacial characteristics. Here, magnetic and structural characterization of profiles and … Interfacial Magnetic Characteristics of Nearly Compensated Gadolinium …

A Review of UTe2 at High Magnetic Fields

November 1, 2023
Author(s)
Sylvia Lewin, Corey Frank, Sheng Ran, Johnpierre Paglione, Nicholas Butch
… exhibits a wealth of additional unusual behavior at high magnetic fields. One of the most prominent signatures of the … survives to 35 T and is bounded by a discontinuous magnetic transition, which itself is also … phase emerges only on the high-field side of the magnetic transition, in a range of angles between the …

Measurement and Modeling of Polarized Specular Neutron Reflectivity in Large Magnetic Fields

August 1, 2016
Author(s)
Brian B. Maranville, Brian J Kirby, Alexander J Grutter, Paul Kienzle, Charles F. Majkrzak, Yaohua Liu, Cindi L. Dennis
… The presence of a large applied magnetic field removes the degeneracy of the vacuum energy … that is used to calculate the expected scattering from a magnetic layered structure. For samples with magnetization … of Polarized Specular Neutron Reflectivity in Large Magnetic Fields …

Preliminary Design and Noise Considerations for an Ultrasensitive Magnetic Field Sensor

October 16, 2008
Author(s)
Philip Pong, Robert D. McMichael, William F. Egelhoff Jr.
… design including the materials, junction areas, and magnetic layers thicknesses, and various noise sources … Johnson noise, shot noise, 1/f noise, and thermal magnetic noise, that must be considered when building a magnetic tunnel junction (MTJ) magnetic field sensor with the …

Multi-k Magnetic Structure and Large Anomalous Hall Effect in Candidate Magnetic Weyl Semimetal NdAlGe

June 13, 2023
Author(s)
C. Dhital, Rebecca Dally, R. Ruvalcaba, R. Gonzalez-Hernandez, J. Guerrero-Sanchez, Huibo Cao, Q. Zhang, W. Tian, Y. Wu, M. Frontzek, S. K. Karna, A. Meads, B. Wilson, R. Chapai, D. Graf, J. Bacsa, R. Jin, J. DiTusa
… The magnetic structure, magnetoresistance, and Hall effect of non-centrosymmetric magnetic semimetal NdAlGe are investigated revealing an unusual magnetic state and anomalous transport properties that are … neutron diffraction, anomalous Hall effect, Weyl semimetal, magnetic structure, non-centrosymmetric, DFT, …

Evolution of the Magnetic Properties in the Antiferromagnet Ce 2 RhIn 8 Simultaneously Doped with Cd and Ir

November 20, 2020
Author(s)
D. S. Christovam, G. S. Freitas, M. M. Piva, J. C. Souza, M. O. Malcolms, O. L. Canton, Juscelino Leao, William D. Ratcliff, Jeffrey W. Lynn, C. Adriano, P. G. Pagliuso
… We report the evolution of the magnetic properties of Ce 2 Rh 1−x Ir x In 8−y Cd y single … Ir 0.5 In 7.79 Cd 0.21 (T N = 4.2 K), we have solved the magnetic structure of these compounds using single crystal neutron magnetic diffraction experiments. Taking the magnetic …

Magnetic Uniformity and Limits on Room-Temperature Magnetization in Strained RuO2/TiO2 Films

May 29, 2025
Author(s)
Xuezhao Wu, Alexander Grutter, Ruizi Liu, Purnima P. Balakrishnan, Christy J. Kinane, Andrew J. Caruana, Yiyang Zhang, Xiaolin Ren, Yifan Jiang, Rolf Lortz, Shiming Lei, Qiming Shao
… and analyze the potential nonuniform strain-induced net magnetization profile through superconducting quantum … used to fit the PNR data, revealing no significant net magnetization signal in either the film or the interface. Our … Magnetic Uniformity and Limits on Room-Temperature …

Exchange Coupling in Magnetic Semiconductor Multilayers and Superlattices

May 1, 2012
Author(s)
J. K. Furdyna, J. Leiner, X. Liu, M. Dobrowolska, S. Lee, J.-H. Chung, Brian Kirby
… trilayers ¿ consisting of GaMnAs layers separated by non-magnetic GaAs spacers. These measurements serve to identify … Magnetic Semiconductors, neutron reflectometry … Exchange Coupling in Magnetic Semiconductor Multilayers and Superlattices …
Displaying 226 - 250 of 3361
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