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Displaying 801 - 825 of 3361

Spatial Evolution of the Ferromagnetic Phase Transition in an Exchange Graded Film

January 29, 2016
Author(s)
Brian J. Kirby, H. F. Belliveau, D. D. Belyea, Paul A. Kienzle, Alexander J. Grutter, P. Riego, A. Berger, Casey W. Miller
A combination of experiments and numerical modeling was used to study the spacial evolution of the ferromagnetic phase transition in a thin film engineered to have a smooth gradient in exchange strength, and thus effectively a gradient in local transition

Nanoscale Magnetic Localization in Exchange Strength Modulated Ferromagnets

August 3, 2018
Author(s)
Brian J Kirby, L. Fallarino, P. Riego, Brian B. Maranville, Casey W. Miller, A. Berger
… is largely dependent on the inherent spatial resolution of magnetic properties - specifically the distance over which the magnetic exchange strength behaves locally. To test the … simulations of localized spins indicate that non-local magnetic effects are negligible at distances greater 0.6 nm. …

Magnetic field imaging with microfabricated optically-pumped magnetometers

March 28, 2017
Author(s)
Orang Alem, Rahul Mhaskar, Ricardo Jimenez-Martinez, Dong Sheng, John LeBlanc, Lutz Trahms, Tilman Sander, Svenja A. Knappe
… through optical fibers of length 5 m. At very low ambient magnetic fields, the magnetic sensors array has an average sensitivity of 24 … each sensor is averaged between 10 and 50 Hz. In Earth's magnetic field, the magnetometers have a field sensitivity … Magnetic field imaging with microfabricated optically-pumped …

Characterization of Magnetic Properties at Edges by Edge Mode Dynamics

April 21, 2006
Author(s)
Brian B. Maranville, Robert McMichael, Sudook A. Kim, Ward L. Johnson, C A. Ross, J Cheng
… We have used trapped spinwave or edge modes of magnetic precession to probe the magnetic environment near magnetic film edges magnetized perpendicular to the edge. … Characterization of Magnetic Properties at Edges by Edge Mode Dynamics …

Magnetic Moments in Cr Thin Films on Fe(100)

January 1, 1993
Author(s)
Daniel T. Pierce, Robert Celotta, John Unguris
… temperature of bulk Cr, T N ), to 1.8 T N , the surface magnetic moment is seen to persist and change direction with … limitations which prevent the determination of the surface magnetic moment from the spin polarization of secondary … Magnetic Moments in Cr Thin Films on Fe(100) …

Control of Magnetoelectric Coupling in the Co 2 Y-Type Hexaferrites

March 16, 2021
Author(s)
Chang B. Park, Kwang W. Shin, Sae H. Chun, Jun H. Lee, Yoon S. Oh, Steven M. Disseler, Colin A. Heikes, William D. Ratcliff, Woo-Suk Noh, Jae-Hoon Park, Kee H. Kim
We comprehensively investigated the magnetic, ferroelectric, and ME properties of Ba 2-xSr xCo 2(Fe 1-yAl y) 12O 22 single crystals in broad doping ranges of Sr (1.0 less than or equal to} x less than or equal to} 1.8) and Al (0.00 less than or equal to} y

Generation of bright phase-matched circularly-polarized extreme ultraviolet high harmonics

December 8, 2014
Author(s)
Justin M. Shaw, Patrik Grychtol, Dmitriy Zusin, Ronny J. Knut, Tenio Popmintchev, Hans T. Nembach, Avner Fleischer, Henry Kapteyn, Margaret Murnane, Ofer Kfir, Oren Cohen
Circularly-polarized extreme UV and X-ray radiation provides valuable access to the structural, electronic and magnetic properties of materials. To date, this capability was available only at large-scale X-ray free-electron lasers or synchrotrons. Here we

Vectorial second-harmonic magneto-optic kerr effect measurement

May 1, 2000
Author(s)
Pavel Kabos, Anthony B. Kos, Thomas J. Silva
A significant modification of an existing experimental technique based on the second-harmonic magneto-optical Kerr effect (SH-MOKE) is introduced. With a p-polarized pumping optical wave incident upon a magnetic film, the transverse component of

High-Energy Magnetic Excitations from Heavy Quasiparticles in CeCu 2 Si 2

June 18, 2021
Author(s)
Yu Song, Weiyi Wang, Chongde Cao, Zahra Yamani, Yuanji Xu, Yutao Sheng, Wolfgang Loser, Yiming Qiu, Yi-Feng Yang, Robert J. Birgeneau, Pengcheng Dai
… Using inelastic neutron scattering, we show magnetic excitations in CeCu 2 Si 2 exhibit a strongly … 1:5 meV, and at higher energies evolve into broad columnar magnetic excitations that extend to E approximatley greater than or equal to} 5 meV. While low-energy magnetic excitations exhibit marked three-dimensional …

Polarized Electron Probes of Magnetic Surfaces

January 1, 1986
Author(s)
Robert Celotta, Daniel T. Pierce
… The magnetic properties of surfaces are now being explored with … structures permits new phenomena to be investigated at magnetic surfaces and interfaces. For such investigations, … Polarized Electron Probes of Magnetic Surfaces …

Observation of Anti-Damping Spin-Orbit Torques Generated by In-Plane and Out-of-Plane Spin Polarizations in MnPd 3

December 16, 2020
Author(s)
Mahendra DC, Ding-Fu Shao, Vincent D.-H. Hou, Patrick Quarterman, Ali Habiboglu, Brooks Venuti, Masashi Miura, Brian Kirby, Arturas Vailionis, Chong Bi, Xiang Li, Fen Xue, Yen-Lin Huang, Yong Deng, Shy-Jay Lin, Wilman Tsai, Serena Eley, Weigang Wang, Julie A. Borchers, Evgeny Y. Tsymbal, Shan X. Wang
High spin-orbit torques (SOTs) generated by topological materials and heavy metals interfaced with a ferromagnetic layer show promise for next generation magnetic memory and logic devices. SOTs generated from the in-plane spin polarization along y-axis

Zero-field remote detection of NMR with a microfabricated atomic magnetometer

February 19, 2008
Author(s)
M Ledbetter, I Savukov, D Budker, V Shah, Svenja A. Knappe, John E. Kitching, D Michalak, S Xu, A Pines
We demonstrate remote detection of nuclear magnetic resonance (NMR) with a microfabricated atomic magnetometer and microfluidic channel integrated on a single device. Detection occurs at zero magnetic field, which allows operation of the magnetometer in

A chromium surface magneto-optical trap for magnetic microtrap studies

May 1, 2004
Author(s)
M Pichler, S Hill, Jabez J. McClelland
… as a first step toward loading atoms into microscopic magnetic traps. Characteristics of the trap and transfer to microscopic magnetic traps will be discussed. … A chromium surface magneto-optical trap for magnetic microtrap studies …

Direct imaging of coexisting ordered and frustrated sublattices in artificial ferromagnetic quasicrystals

April 25, 2016
Author(s)
Barry Farmer, Vinayak Bhat, Andrew L. Balk, Eric Teipel, Nathan Smith, John Unguris, D.J. Keavney, Todd Hastings, L .E. De Long
Quasicrystals are rarely found in nature and are difficult to grow in the laboratory, but exhibit unique physical properties resulting from their signature long-range structural order without periodic translational symmetry. Magnetic interactions in

Magnetic Depth Profiling Co/Cu Multilayers to Investigate Magnetoresistance

May 1, 2000
Author(s)
John Unguris, D Tulchinsky, Michael H. Kelley, Julie A. Borchers, Joseph A. Dura, Charles F. Majkrzak, S. Y. Hsu, R Loloee, W Pratt, J Bass
… The magnetic microstructure responsible for the metastable high … and quantitatively depth profile the interlayer magnetic domain correlations. We found that in the … Magnetic Depth Profiling Co/Cu Multilayers to Investigate …

Ring-exchange interaction effects on magnons in the Dirac magnet CoTiO3

May 21, 2024
Author(s)
Yufei Li, Thuc Mai, Mohammed Karaki, Evan Jasper, Kevin Garrity, Chase Lyon, Daniel Shaw, Timmothy DeLazzer, Adam Biacchi, Rebecca Dally, Daniel Heligman, Jared Gdanski, Tehseen Adel, Maria Munoz, Alex Giovannone, Amit Pawbake, Clement Faugeras, Jeffrey Simpson, Kate Ross, Nandini Trivedi, Yuanming Lu, Angela R. Hight Walker, Rolando Valdes Aguilar
… Ring-exchange interaction effects on magnons in the Dirac magnet CoTiO3 …

Exchange Coupling in Magnetic Heterostructures

January 1, 1993
Author(s)
Mark D. Stiles
… Many structures consisting of magnetic layers separated by a nonmagnetic spacer layer show … from the interfaces between the spacer layers and the magnetic layers. To test this and related models, the … Exchange Coupling in Magnetic Heterostructures …
Displaying 801 - 825 of 3361
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