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Displaying 701 - 725 of 3361

Magnetoelastic Coupling in La 0.7 Ca 0.3 MnO 3 /BaTiO 3 Ultrathin Films

October 11, 2013
Author(s)
A. Alberca, N. M. Nemes, F. J. Mompean, Titusz Feher, Ferenc Simon, J. Tornos, C. Leon, C. Munuera, Brian Kirby, M. R. Fitzsimmons, A. Hernando, J. Santamaria, M. Garcia-Hernandez
The magnetism of La 0.7Ca 0.3MnO 3 (LCMO) expitaxial thin films grown SrTi 3 (STO)and BaTiO 3 (BTO) substrates is studied using Polarized Neutron Reflectometry (PNR) and Ferromagnetic Resonance (FMR) techniques. PNR reveals a strongly suppressed

Interfacial Ferromagnetism in LaNiO 3 /CaMnO 3 Superlattices

August 21, 2013
Author(s)
A. J. Grutter, H. Yang, Brian Kirby, M. R. Fitzsimmons, J. A. Aguiar, N. D. Browning, C. A. Jenkins, E. Arenholz, V. V. Mehta, U. S. Alaan, Y. Suzuki
We observe interfacial ferromagnetism in superlattices of the paramagnetic metal LaNiO 3 and the antiferromagnetic insulator CaMnO 3. The magnetic behavior can be explained in terms of an interfacial double exchange mechanism in which itinerant electrons

Stable Single-Crystalline Body Centered Cubic Fe Nanoparticles

April 20, 2011
Author(s)
Natalie F. Huls, Lise-Marie Lacroix, Don Ho, Xiaolian Sun, Shouheng Sun
Air stable magnetic nanoparticles (MNPs) with high magnetization are required in order to fully realize optimized biomedical agents. However, only metallic NPs with good crystallinity such as Fe or FeCo, exhibit magnetization as high as 220 A.m.kg. Their

Progress on Vacuum-to-Air Mass Calibration System Using Magnetic Suspension to Disseminate the Planck-Constant Realized Kilogram

October 2, 2014
Author(s)
Eric Benck, Patrick J. Abbott, Zeina J. Kubarych
… realized in a vacuum environment. This apparatus uses magnetic levitation to couple the kilogram in air to a high … Magnetic levitation, mass metrology, Planck constant, revised … Progress on Vacuum-to-Air Mass Calibration System Using Magnetic Suspension to Disseminate the Planck-Constant …

Magnetic connectors for microfluidic applications

January 1, 2010
Author(s)
Francisco J. Atencia, Gregory A. Cooksey, Andreas Jahn, Justin M. Zook, Wyatt N. Vreeland, Laurie E. Locascio
… Magnetic connectors for microfluidic applications …

Applications of Giant Magnetoresitance Spin-Valve Transpinnor for Magneto-Electronics

October 12, 2021
Author(s)
S E. Bae, S Zurn, William F. Egelhoff Jr., P J. Chen, E J. Torok, R Spitzer, J H. Judy
This paper discusses the applications of a Transpinnor, a new kind of active solid-state device utilizing giant magnetoresitance (GMR) spin valves, for the state of art of magneto-electronic device technology. A Transpinnor is a modified Wheatstone bridge

Prediction of Magnetic Properties in van der Waals Magnets using Graph Neural Networks

November 4, 2024
Author(s)
Kamal Choudhary, Peter Minch, Trevor David Rhone, Romakanta Bhattarai
… We study two-dimensional (2D) magnetic materials using state-of-the-art machine learning … train the ALIGNN model on data comprising local and global magnetic moments of 314 2D structures of the form … learning the relationships between both local and global magnetic properties, we demonstrate an improvement over …

An Itinerant Antiferromagnetic Metal Without Magnetic Constituents

July 13, 2015
Author(s)
E. Svanidze, Jiakui K. Wang, Tiglet Besara, L. Liu, Qingzhen Huang, T. Siegrist, Benjamin Frandsen, Jeffrey W. Lynn, Andriy H. Nevidomskyy, Monica Barbara Gamza, M.C. Aronson, Y.J. Uemura, E. Morosan
… mainly due to the limited number of known itinerant magnetic systems. In the case of the two such examples … ago, ZrZn 2 1 and Sc 3 In 2 , the understanding of their magnetic ground states draws on the existence of 3d electrons … state its 3d character has been deemed crucial to it being magnetic. Here we report the discovery of the first IAFM with …

Finite coplanar waveguide width effects in pulsed inductive microwave magnetometry

July 12, 2004
Author(s)
Michael Schneider, Anthony B. Kos, Thomas J. Silva
The effect of finite coplanar waveguide (CPW) width on the measurement of the resonance frequency in thin ferromagnetic films has been characterized for pulsed inductive microwave magnetometry. A shift in resonant frequency is a linear function of the

Local Weak Ferromagnetism in Single-Crystalline Ferroelectric BiFeO 3

November 1, 2011
Author(s)
M. Ramazanoglu, M. Laver, William D. Ratcliff, Shannon M. Watson, Wangchun Chen, Andrew Jackson, Karunakar NMN Kothapalli, Seongsu Lee, S.- W. Cheong, V. Kiryukhin
Polarized small-angle neutron scattering studies of single-crystalline multiferroic BefeO 3 reveal a long-wavelength spin density wave generated by 1° spin canting of the spins out of the rotation plane of the antiferromagnetic cycloidal order. This

Probing the timescale of the exchange interaction in a ferromagnetic alloy

January 27, 2012
Author(s)
Justin M. Shaw, Stefan Mathias, Chan La-O-Vorakiat, Hans T. Nembach, Thomas J. Silva, Mark Siemens, Henry Kapteyn, Margaret Murnane
The underlying physics of all ferromagnetic behavior is the cooperative interaction between individual atomic magnetic moments that results in a macroscopic magnetization. In this work, we use extreme ultraviolet pulses from high-harmonic generation as an

Long-Range Electric Field Control of Permalloy Layers in Strain-Coupled Composite Multiferroics

October 18, 2018
Author(s)
Michelle E. Jamer, Colin R. Rementer, Anthony Barra, Alexander Grutter, Kevin Fitzell, Daniel Gopman, Julie Borchers, Gregory P. Carman, Brian Kirby, Jane P. Chang
Artificial composite multiferroic materials can be created by interfacing magnetostrictive and piezoelectric materials, allowing for electric field control of magnetic properties. For multilayer device applications, addition of weakly magnetostrictive

Progress on Vacuum-to-Air Mass Calibration System Using Magnetic Suspension to Disseminate the Planck-constant Realized kilogram

November 1, 2015
Author(s)
Eric Benck, Corey A. Stambaugh, Edward C. Mulhern, Patrick J. Abbott, Zeina J. Kubarych
… realized in a vacuum environment. This apparatus uses magnetic suspension to couple the kilogram in air to a high … Magnetic suspension, mass metrology, Planck constant, revised … Progress on Vacuum-to-Air Mass Calibration System Using Magnetic Suspension to Disseminate the Planck-constant …

Performance of Electret Ionization Chambers in Magnetic Field

April 7, 2006
Author(s)
P Kotrappa, L R. Stieff, Timothy F. Mengers, Robert McMichael, Robert D. Shull
… have any electronics and as such can be introduced into magnetic field regions. It is of interest to study the effect of magnetic fields on the performance of these detectors. … Relative responses are measured with and without magnetic fields present. Quantitative responses are measured …

Intermediate Regime between Metal and Superconductor Below T = 100 K in NiSi

November 28, 2016
Author(s)
Ashutosh Dahal, Jagath Gunasekera, Leland Harriger, S. H. Lee, Y. S. Hor, David J. Singh, Deepak K. Singh
Magnetic response of a metal to an external magnetic field is termed as paramagnetic or diamagnetic, depending on the parallel or antiparallel alignment of electron's moment to the applied field, respectively. 1-3 It remains independent of temperature of

Antisymmetric Magnetoresistance in Magnetic Multilayers With Perpendicular Anisotropy

January 6, 2005
Author(s)
X M. Cheng, Sergei Urazhdin, T Tchernyshyov, C L. Chien, Valerian I. Nikitenko, Alexander J. Shapiro, Robert D. Shull
… been found to be symmetric in applied field H in non-magnetic or magnetic metals, we have observed antisymmetric MR in Co/Pt … a geometry existing only in materials with perpendicular magnetic anisotropy. As a result, the extraordinary Hall … Antisymmetric Magnetoresistance in Magnetic Multilayers With Perpendicular Anisotropy …

Singular Angular Magnetoresistance in a Magnetic Nodal Semimetal

June 26, 2019
Author(s)
T. Suzuki, L. Savary, J.-P. Liu, Jeffrey W. Lynn, L. Balents, J. G. Checkelsky
… signature of spontaneous symmetry breaking in the magnetic Weyl semimetal CeAlGe in the form of singular … high resistance domain walls, arising as a consequence of magnetic point group symmetry breaking strongly coupled to a … A theoretical model, based on teh crystallography and magnetic anisotropy of CeAlGe, agrees well with the phase …

Ferromagnetism in van der Waals Compound MnSb 1.8 Bi 0.2 Te 4

June 11, 2020
Author(s)
Yangyang Chen, Ya-Wen Chuang, Seng Huat Lee, Yanglin Zhu, Kevin Honz, Yingdong Guan, Yu Wang, Ke Wang, Zhiqiang Mao, Jun Zhu, Colin A. Heikes, Patrick Quarterman, P. Zajdel, Julie Borchers, William D. Ratcliff
The intersection of topology and magnetism represent a new playground to discover novel quantum phenomena and new device concepts. In this work, we show that a van der Waals compound MnSb 1.8 Bi 0.2Te 4 exhibits a ferromagnetic ground state with a Curie

Magnetic Properties of Co/GaAs(110)

December 4, 2006
Author(s)
T Monchesky, John Unguris
… We observed three magnetic states of an ultrathin, atomically well-ordered Co … with an easy axis along the [110] direction. This magnetic state persists up to a thickness of 7 ML, at which … Magnetic Properties of Co/GaAs(110) …

Copper-Substituted Iron Telluride: A Phase Diagram

June 22, 2015
Author(s)
Patrick N. Valdivia, Min Gyu Kim, Thomas R. Forrest, Zhijun Xu, Meng Wang, Hui Wu, Leland Harriger, Edith D. Bourret-Courchesne, Robert J. Birgeneau
Metal site alloying of the iron chalcogenides is known to give rise to bulk insulating states with no known analogue in the iron arsenide phase diagrams. We have studied the structure, magnetic, and transport properties of copper substituted iron telluride
Displaying 701 - 725 of 3361
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