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Displaying 851 - 875 of 3361

Cd-doping effects in Ce 2 MIn 8 (M=Rh and Ir) Heavy Fermion Compounds

June 15, 2010
Author(s)
C. Adriano, C. Giles, E. M. Bittar, L. N. Coelho, F. de Bergevin, C. Mazzoli, L. Paolasini, William Ratcliff, Richard Bindel, Jeffrey Lynn, Z. Fisk, P. G. Pagliuso
Low temperature magnetic properties of Cd-doped Ce 2MIn 8 (M = Rh and Ir) single crystals are investigated. Experiments of temperature dependent magnetic susceptibility, heat capacity and electrical resistivity measurements revealed that Cd-doping enhances

Magnetic field-induced spectroscopy of strongly forbidden optical transitions

March 3, 2006
Author(s)
Alexey Taychenachev, V Yudin, Christopher W. Oates, C Hoyt, Zeb Barber, Leo W. Hollberg
… We propose a method that uses a static magnetic field to enable direct optical excitation of … The method is based on mixing of atomic states by a static magnetic field. The method can also be viewed as a limiting … where the frequency of one of the fields -- a magnetic field, in this case -- is equal to zero. Using this …

Magnetic Field-Induced Spectroscopy of Strongly Forbidden Optical Transitions

March 1, 2006
Author(s)
Alexey Taychenachev, V Yudin, Christopher W. Oates, C Hoyt, Zeb Barber, Leo W. Hollberg
… We propse a method that uses a static magnetic field to enalbe direct optical excitation of … The method is based on mxing of atomic states by a static magnetic field. The methid can also be viewed as a limiting … spectroscopy, where the frequency of one of the fields--a magnetic field, in this case -- is equal to zero. Using this …

Multiple Magnetic Structures of Correlated Ce-ions in Intermetallic CeAu 2 Ge 2

August 13, 2012
Author(s)
Deepak Singh, A. Thamizhavel, Jeffrey W. Lynn, S. K. Dhar, T. Hermann
… high quality single crystal of CeAu 2 Ge 2 reveal two new magnetic structures that coexist with commensurate long range … Neel temperature T N {approximately equal} 14 K. The new magnetic structures, which exhibit distinct temperature and … are described by both commensurate and incommensurate magnetic structures and introduces a new region in the in the …

Kerr Imaging of a Co/Pt Bimodal Magneto-Optical Medium

February 1, 2000
Author(s)
R A. Fry
Spatially-resolved magneto-optical (MO) images of a (0.3 nm Co/1.2 nm Pt)15 multilayer film with perpendicular magnetic anisotropy have been obtained by Kerr microscopy. This material exhibits a major hysteresis loop with two-stepmagnetization reversal

Microwave Resonances in Nanogranular (Fe

October 2, 2006
Author(s)
Massimo Pasquale, Sergio Perero, Giorgio Bertotti, Pavel Kabos
We have analyzed the microwave behavior of soft nanogranular (Fe 0.7uCo 0.3u) 71uB 22uNi films with thickness of 136, 195 and 236 nm which present a dc relative permeability from 60 to 280, a resistivity of 8 to 9×10 7d Ω}m and a zero-field double

Screened Moments and Extrinsic In-Gap States in Samarium Hexaboride

April 18, 2018
Author(s)
W. T. Fuhrman, J. R. Chamorro, P. A. Alekseev, J.-M. Mignot, T. Keller, Jose Rodriguez Rivera, Yiming Qiu, P. Nikolic, T. M. McQueen, Collin L. Broholm
The Kondo impurity effect in metals is the result of quantum-mechanical scattering of conduction electrons by magnetic impurities. 1 This process leads to exotic effects such as unconventional superconductivity and an effective electron mass enhanced by 2

Composition-based Reduction of Damping in Fe1-xVx (50nm) Thin Films

October 12, 2021
Author(s)
L Cheng, H Song, J O. Rantschler, Robert McMichael, William E. Bailey
The reduction of GHz damping a is a critical and unaddressed need in ferromagnetic materials development. Smith has predicted that the signal-to-noise ratios of nanoscale / Ghz spin electronic sensors will be inversely dependent on the free magnetic layer

Magnetic Phase Transitions and Spin Density Distribution in the Molecular Multiferroic System GaV 4 S 8

July 6, 2020
Author(s)
Rebecca Dally, William Ratcliff, Lunyong Zhang, Heung-Sik Kim, Markus Bleuel, J. W. Kim, Kristjan Haule, David Vanderbilt, Sang-Wook Cheong, Jeffrey Lynn
… lacunar spinel multiferroic, GaV 4 S 8 , as a function of magnetic field and temperature to determine the magnetic form factor for the single electron that is located … system becomes a robust ferroelectric, while long range magnetic order develops below 13 K in the form of an …

Coercivity in Exchange-Bias Bilayers

January 18, 2001
Author(s)
Mark D. Stiles, Robert D. McMichael
Simulations of magnetic reversal in polycrystalline exchange-bias bilayers exhibit two contributions to the enhanced coercivity found in exchange-bias systems, one due to inhomogeneous reversal and and the other to irreversible transitions in the

Symmetry of Magnetic Correlations in Spin-Triplet Superconductor UTe2

April 5, 2022
Author(s)
Nicholas Butch, Sheng Ran, Shanta Saha, Paul Neves, Mark P. Zic, Johnpierre N. Paglione, Yegor N. Vekhov, Sergiy Gladchenko, Jose Rodriguez Rivera
… The temperature dependence of the low-energy magnetic excitations in the spin-triplet superconductor UTe2 … track the temperature evolution of the heavy fermion bulk magnetic susceptibility. Thus, the imaginary part of the … correlations. The onset of superconductivity alters the magnetic excitations noticeably on the same energy scales, …

Unconventional spin glass behavior in the pyrochlore Mn2Sb2O7

July 9, 2008
Author(s)
H. D. Zhou, C. R. Wiebe, A. Harter, Naresh S. Dalal, Jason Gardner
The new pyrochlore Mn2Sb2O7 has been synthesized via a low-temperature method to retain cubic Fd2m symmetry. The resulting material has an unconventional spin glass state at TSG∼41 K, in the absence of detectable site disorder or a structural phase

Giant Effect of Uniaxial Pressure on Magnetic Domain Populations in Multiferroic Bismuth Ferrite

August 5, 2011
Author(s)
M. Ramazanoglu, William D. Ratcliff, H. T. Yi, A. A. Sirenko, S.- W. Cheong, V. Kiryukhin
… produces significant changes in the populations of magnetic domains in a single crystal of 2% Nd-doped bismuth ferrite. The magnetic easy plane of the domains converted by the pressure … These results deomonstrate extreme sensitivity of the magnetic properties of multiferroic bismuth ferrite to tiny …

Raman Processes and Effective Gauge Potentials

June 19, 2009
Author(s)
Ian B. Spielman
Here I discuss a new technique by which light-induced gauge potentials allow systems of ultra-cold neutral atoms to behave like charged particles in a magnetic field. Here, atoms move in a uniform laser field with a spatially varying Zeeman shift and

Absence of Magnetic Interactions in Ni-Nb Ferromagnet-Superconductor Bilayers

March 28, 2023
Author(s)
Nathan Satchell, Patrick Quarterman, Julie A. Borchers, Gavin Burnell, Norman Birge
… ferromagnet-superconductor hybrid systems have uncovered magnetic interactions between the competing electronic … layer and Ni ferromagnetic layer to test for such magnetic interactions. We use the complementary, but … and detection Josephson junctions to probe the magnetic response inside the superconducting layer at close …

Perpendicular magnetic tunnel junctions with multi-interface free layer

December 15, 2021
Author(s)
Pravin Khanal, Bowei Zhou, Magda Andrade, Yanliu Dang, Albert Davydov, Ali Habiboglu, Jonah Saidian, Adam Laurie, Jian-Ping Wang, Daniel Gopman, Weigang Wang
… Future generations of magnetic random access memory demand magnetic tunnel junctions that can provide simultaneously … small cell size below 10nm. Here we study perpendicular magnetic tunnel junctions with composite free layers where … Perpendicular magnetic tunnel junctions with multi-interface free layer …

Demonstration of focusing Wolter mirrors for neutron phase and magnetic imaging

April 21, 2021
Author(s)
Daniel S. Hussey, Han Wen, Huarui Wu, Thomas R. Gentile, Wangchun Chen, David L. Jacobson, Jacob LaManna, B. Khaykovich
… phase imaging with a far-field interferometer, and magnetic-field imaging through the manipulation of the … resolution of the far-field interferometer. For the magnetic imaging, the rotation of the neutron polarization in the magnetic field was measured by placing a solenoid at 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

Locally controlled magnetic anisotropy in transcritical permalloy thin films using ferroelectric BaTiO3 domains

November 26, 2014
Author(s)
Michael J. Donahue, Sean W. Fackler, Tieren Gao, Paris N. Nero, Sang-Wook Cheong, John Cumings, Ichiro Takeuchi
… We investigated the local coupling between dense magnetic stripe domains in transcritical permalloy (tPy) thin … a tPy/BaTiO 3 heterostructure. Two distinct changes in the magnetic stripe domains of tPy were observed from the magnetic force microscopy images after cooling the …
Displaying 851 - 875 of 3361
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