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Displaying 876 - 900 of 3361

Techniques to Measure Magnetic Domain Structures

September 11, 2000
Author(s)
Robert Celotta, John Unguris, Michael H. Kelley, Daniel T. Pierce
… A summary of the current techniques for magnetic domain imaging of materials, including the practical … Techniques to Measure Magnetic Domain Structures …

Model of magnetic impurities within the Josephson junction of a phase qubita

December 23, 2009
Author(s)
David P. Pappas, R. P. Erickson
… the London gauge we present a theoretical model of Fe3+ magnetic impurities within the junction that describes the … expressed in terms of angular momentum states of the magnetic impurities and low-lying oscillator states of the … We comment on the coherent coupling between qubit and magnetic impurities within the model, including the …

Correlated Spin Canting in Ordered Core-Shell Fe 3 O 4 /Mn x Fe 3-x Od4^ Nanoparticle Assemblies

March 18, 2019
Author(s)
Y. Ijiri, Kathryn L. Krycka, I. Hunt-Isaak, H. Pan, J. Hsieh, Julie Borchers, James Jennings Rhyne, Samuel D. Oberdick, A. Abdelgawad, S. A. Majetich
Polarization-analyzed small-angle neutron scattering methods are used to determine the spin arrangements in ordered three-dimensional assemblies of 7.4 nm diameter core-shell Fe 3O 4/Mn xFe 3-xO 4 nanoparticles. In moderate to high magnetic fields, the

Arrays of magnetoresistive sensors for nondestructive testing

July 20, 2004
Author(s)
David P. Pappas, Fabio C. da Silva, Alexy V. Nazarov
Magnetic field distributions were measured for test stripline structures with anisotropic magnetoresistive (AMR), thin film Permalloy sensors. Linear arrays of eight barber-pole-type AMR sensors were used to increase the speed of the imaging and stability

Design and Realization of a Sputter Deposition System for the in situ and in operando Use in Polarized Neutron Reflectometry Experiments: Novel Capabilities

June 1, 2020
Author(s)
Jingfan Ye, Alexander Book, Sina Mayr, Henrik Gabold, Fankai Meng, Helena Schafferer, Ryan F. Need, Dustin Gilbert, Thomas Saerbeck, Jochen Stahn, Peter Boni, Wolfgang Kreuzpaintner
Recently, the design and realization of a sputter-deposition system for in situ and in operando neutron reflectometry (PNR) was reported. The device allows magnetic thin films and heterostructures to be grown, while the sample remains aligned in the

Multilayers: Interlayer Coupling

August 1, 1999
Author(s)
P Grunberg, Daniel T. Pierce
The extensive research done on interlayer exchange coupling in transition metal multilayers has resulted in a deep understanding of this coupling and a remarkable agreement between theoretical results and measurements. The coupling between two magnetic

Impurity Effects on Spin Dynamics in Magnetic and Superconducting Iron Pnictides and Chalcogenides

January 1, 2017
Author(s)
M. A. Surmach, Dimitri Feys, J. T. Park, Jose Rodriguez Rivera, D. L. Sun, Y. Liu, C. T. Lin, D. S. Inosov
… In this paper we summarize the effects of magnetic and nonmagnetic impurities on the spin dynamics in … We also present new results on the structure of magnetic fluctuations in BaFe 2 As 2 single crystals doped … in relationship to the previously reported (π,π) branch of magnetic fluctuations. …

Spin-transfer torque switching observed in nanopillar superconducting-magnetic hybrid Josephson junctions

January 9, 2015
Author(s)
Burm Baek, William H. Rippard, Matthew R. Pufall, Samuel P. Benz, Stephen E. Russek, Horst Rogalla, Paul D. Dresselhaus
… Combining superconducting and magnetic materials to create novel superconducting devices … of the Josephson critical current (Ics) oscillations with magnetic layer thickness and the demonstration of devices … torque, that are presently being used in room-temperature magnetic devices, such as spin- transfer torque random access …

CO Chemisorption on Ni(110): Effect on Surface Magnetism

January 1, 1986
Author(s)
C Feigerle, A Seiler, J Pena, Robert Celotta, Daniel T. Pierce
… The effect of CO chemisorption on the surface magnetism and unfilled electronic structure of Ni(110) is … CO Chemisorption on Ni(110): Effect on Surface Magnetism …

Using Terahertz Waves to Identify the Presence of Goethite via Antiferromagnetic Resonance

April 24, 2017
Author(s)
Edward J. Garboczi, David F. Plusquellic, Robert D. McMichael, Virgil Provenzano, Paul E. Stutzman, Jack T. Surek, Shin G. Chou, Shuangzhen Wang
Virtually every corrosion detection method reports only the presence of a material phase denoting probable corrosion, not its spectral signature. A signature specific to the type of iron oxide corrosion would not only confirm the presence of corrosion but

Large Exchange Splitting in Monolayer Graphene Magnetized by an Antiferromagnet

September 30, 2020
Author(s)
Yingying Wu, Gen Yin, Lei Pan, Alexander Grutter, Quanjun Pan, Albert Lee, Dustin A. Gilbert, Julie A. Borchers, William D. Ratcliff, Ang Li, Xiao-dong Han, Kang L. Wang
… the experimental realization of monolayer graphene magnetized by an underlying antiferromagnet. By coupling … Large Exchange Splitting in Monolayer Graphene Magnetized by an Antiferromagnet …

Long-Range Magnetic Order in Hydroxide-Layer-Doped (Li 1-x-y Fe x Mn y OD)FeSe

March 11, 2020
Author(s)
Brandon Wilfong, Xiuquan Zhou, Huafei Zheng, Navneeth Babra, Craig Brown, Jeffrey W. Lynn, Keith M. Taddei, Johnpierre Paglione, Efrain E. Rodriguez
… superconductor has been suspected to exhibit long-range magnetic ordering due to Fe substitution in the LiOH layer. However, no direct observation such as magnetic reflection from neutron diffraction has be reported. … level of transition metals in the LiOH layer to tune the magnetic properties of the (Li 1-x-y Fe x Mn y OD)FeSe …

Magnetic Transitions in the Topological Magnon Insulator Cu(1,3-bdc)

June 2, 2016
Author(s)
Robin Michael Daub Chisnell, Joel Helton, D. E. Freedman, D. K. Singh, F. Demmel, Chris Stock, D. G. Nocera, Y. S. Lee
… Topological magnon insulators are a new class of magnetic materials that posses topologically nontrivial … Magnetic Transitions in the Topological Magnon Insulator …

Combining Microscopic and Macroscopic Probes to Untangle the Single-Ion Anisotropy and Exchange Energies in an S = 1 Quantum Antiferromagnet

April 20, 2017
Author(s)
Jamie Brambleby, Jamie Lee Manson, Paul A. Goddard, Matthew B. Stone, Roger D. Johnson, Pascal Manuel, Jacquelina A. Villa, Craig Brown, Helen Lu, Shalinee Chikara, Vivien Zapf, Saul H. Lapidus, Rebecca Scatena, Piero Macchi, Yu-Sheng Chen, Lai-Chin Wu, John Singleton
We derive a synergistic approach to determine the spin Hamiltonian and field-temperature phase diagram for polycrystalline samples of S = 1 [Ni(HF 2)(pyz) 2]SbF 6 by exploiting a selected range of experimental techniques. Spatial exchange anisotropy was

Complex Structures of Different CaFe 2 As 2 Samples

February 18, 2014
Author(s)
Bayrammurad Saparov, Claudia Cantoni, Minghu Pan, Thomas C. Hogan, William D. Ratcliff, Stephen D. Wilson, Katharina Fritsch, Bruce D. Gaulin, Athena S. Sefat
We use temperature-dependent X-ray and neutron diffraction, low-temperature scanning tunneling microscopy, and room-temperature scanning-transmission electron-microscopy, to investigate the interplay between magnetism and crystal structures in three CaFe

Anisotropy induced Feshbach resonances in a quantum dipolar gas of magnetic atoms.

September 7, 2012
Author(s)
A Petrov, Svetlana A. Kotochigova, Eite Tiesinga
… of Feshbach resonances in the collision between ultracold magnetic submerged-shell dysprosium atoms, which can only … a striking correlation be tween the anisotropy due to magnetic dipole-dipole and electrostatic interactions and the Feshbach spectrum as a function of an external magnetic field. In a 20 mT magnetic field range we predict …

Quasistatic Antiferromagnetism in the Quantum Wells of SmTiO 3 /SrTiO 3 Heterostructures

February 20, 2018
Author(s)
Ryan F. Need, Patrick B. Marshall, Eric Kenney, Andreas Suter, Thomas Prokscha, Zaher Salman, Brian Kirby, Susanne Stemmer, Michael J. Graf, Stephen D. Wilson
The magnetic properties of high-density SrTiO 3 quantum wells embedded within the antiferromagnetic Mott insulator SmTiO 3 are explored via muon spin relaxation and polarized neutron reflectometry measurements. The one electron per wel acquired by the

The Nature of Spin Excitations in the One-Third Magnetization Plateau Phase of Ba 3 CoSb 2 O 9

July 10, 2018
Author(s)
Y. Kamiya, L. Ge, Tao Hong, Yiming Qiu, D. L. Quintero-Castro, Z. Lu, H. B. Cao, M. Matsuda, E. S. Choi, C. D. Batista, M. Mourigal, H. D. Zhou, J. Ma
… map the magnetic excitations of Ba 3 CoSb 2 O 9 in its 1/3-magnetization plateau. This enables an investigation on the … The Nature of Spin Excitations in the One-Third Magnetization Plateau Phase of Ba 3 CoSb 2 O 9 …

Ungapped Magnetic Excitations Beyond Hidden Order in URu 2-x Re x Si 2

February 12, 2020
Author(s)
Nicholas P. Butch, Jose A. Rodriguez, M. Brian Maple
… scattering measurements to show that the energy gap in the magnetic excitations of URu 2 Si 2 , induced by the Hidden Order transition, is closed by Re substitution. The magnetic excitations remain ungapped in compositions where … entropy associated with Hidden Order is tied mostly to the magnetic gapping. Further, the onset of ferromagnetic order …
Displaying 876 - 900 of 3361
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