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Displaying 1676 - 1700 of 3361

Chip-scale atomic magnetometer

December 27, 2004
Author(s)
P Schwindt, Svenja A. Knappe, V Shah, Leo W. Hollberg, John Kitching, Li-Anne Liew, John Moreland
Using the techniques of micro-electro-mechanical systems (MEMS), we have constructed a small, low-power magnetic sensor based on alkali atoms. By measuring the energy shift of the atoms' magnetic moment due to a magnetic field via a coherent population

From Serendipity to Rational Design: Tuning the Blue Trigonal Bipyramidal Mn 3+ Chromophore to Violet and Purple through Application of Chemical Pressure

October 1, 2016
Author(s)
Jun Li, Simon Lorger, Judith K. Stalick, Arthur W. Sleight, M. A. Subramanian
We recently reported that an allowed d-d transition of trigonal bipyramidal (TBP) Mn 3+ is responsible for the bright blue color in the YIn 10xMn xO 3 solid solution. The crystal field splitting between a'(d z2) and e'(d x2'y2, D xy) energy levels is very

Observation of spin-orbit effects with spin rotation symmetry

October 13, 2017
Author(s)
Alisha Humphries, Tao Wang, Eric R. Edwards, Shane Allen, Justin Shaw, Hans Nembach, John Xiao, Thomas J. Silva
The spin-orbit interaction in a nonmagnetic/magnetic multilayer has been intensively studied due to its efficient conversion between a spin current and a charge current. In the spin Hall/Rashba-Edelstein effects (SHE/REE) and inverse spin Hall/Rashba

Spherical Test Objects for Hand-held Metal Detector Characterization

September 12, 2018
Author(s)
Nicholas G. Paulter Jr., Donald R. Larson, John A. Ely
Measuring the detection performance of metal detectors (hand-worn, hand-held, and walk-through models) is based on the observation of an alarm indication (light, sound, vibration) given by the metal detector when a threat or test object is present. These

Microfluidic magnetophoretic separations of immunomagnetically labeled rare mammalian cells

February 13, 2012
Author(s)
Thomas P. Forbes, Samuel P. Forry
… of a microfluidic system that incorporates a permanent magnet for the lateral magnetophoresis of paramagnetic beads … in a microfluidic device that incorporates a permanent magnet angled relative to the flow. Through the dimensionless … and experiment design by identifying the necessary beads, magnet configuration (orientation), magnet type (permanent, …

Small-sized dichroic atomic vapor laser lock

April 21, 2011
Author(s)
Svenja A. Knappe, Changmin Lee, Geoffrey Z. Iwata, Eric Corsini, James M. Higbie, Micah P. Ledbetter, Dimitry Budkerl
Two, lightweight diode laser frequency stabilization systems designed for experiments in the field are described. Similar to a previous design, magnetic-field lines are contained within a magnetic shield enclosing permanent magnets and Rb cells, so that this

Scanning Electron Microscopy with Polarized Electrons

April 15, 1987
Author(s)
John Unguris, G Hembree, Robert Celotta, Daniel T. Pierce
The recent joining of scanning electron microscopy and electron spin polarization analysis has greatly improved the ability to study magnetic microstructure. By measuring the spin polarization of secondary electrons, scanning electron microscopy with

High-Relaxivity Superparamagnetic Iron Oxide Nanoworms with Decreased Immune Recognition and Long-Circulating Properties

November 24, 2014
Author(s)
Stephen E. Russek, Guankui Wang, Swetha Inturi, Natalie J. Serkova, Sergey Merkulov, Keith McCrae, Nirmal K. Banda, Dmitri Simberg
One of the core issues of nanotechnology involves masking the foreignness of nanomaterials to enable in vivo longevity and long-term immune evasion. Dextran-coated superparamagnetic iron oxide nanoparticles are very effective magnetic resonance imaging

Distinct magneto-Raman signatures of spin-flip phase transitions in CrI3

August 3, 2020
Author(s)
Amber D. McCreary, Thuc T. Mai, Franz Utermohlen, Jeffrey R. Simpson, Kevin F. Garrity, Xiaozhou Feng, Dmitry Shcherbakov, Yanglin Zhu, Jin Hu, Daniel Weber, Kenji Watanabe, Takashi Taniguchi, Joshua Goldberger, Zhiqiang Mao, Chun Ning Lau, Yuanming Lu, Nandini Trivedi, Rolando Valdes Aguilar, Angela R. Hight Walker
The discovery of 2-dimensional (2D) materials, such as CrI3, that retain magnetic ordering down to monolayer thickness, and even more have layer-dependent magnetic properties has led to a plethora of research in 2D magnetism. Here, we report a magneto

Magneto-Optical Indicator Film (MOIF) Microscopy of Granular and Layer Structures (Abstract)

April 1, 1996
Author(s)
Valerian I. Nikitenko, V S. Gornakov, L M. Dedukh, A F. Khapikov, Lawrence H. Bennett, Robert D. McMichael, L Swartzendruber, Alexander J. Shapiro, Michael J. Donahue, V N. Matveev, V I. Levashov
We report on the possibilities of application of magneto-optical indicator film (MOIF) technique for visualization and direct experimental study in real time of the magnetization processes and nondestructive characterization of the quality of magnetic thin

High Spatial Resolution Quantitative Micromagnetics

January 1, 1990
Author(s)
M Scheinfein, John Unguris, Daniel T. Pierce, Robert Celotta
Magnetization profiles at surfaces are observed with scanning electron microscopy with polarization analysis (SEMPA). This technique allows for quantitative analysis of the vector magnetization profile with 70 nm spatial resolution. Magnetization profiles

Effective Anisotropy Gradient in Pressure Graded [Co/Pd] Multilayers

February 14, 2015
Author(s)
Brian J. Kirby, P. K. Greene, Brian B. Maranville, J. E. Davis, Kai Liu
A vertically graded anisotropy profile has been proposed as an optimized balance of low coercivity and thermal stability for multilayers used in magnetic media. Deposition pressure is known to have a profound effect on the magnetic reversal properties of

Quantitative Analysis of the Crystallinity of CoFeB Layers in Magnetic Random-Access Memory (MRAM) Stacks Using Extended X-ray Absorption Fine Structure Spectroscopy

September 3, 2025
Author(s)
Bruce Ravel, Matthias Gottwald, Christian Lavoie, Jean Jordan-Sweet, Steve Brown, Guohan Hu
… thin CoFeB-based structures used in Spin Transfer Torque Magnetic Random-Access Memory (STT-MRAM). This method allows … Analysis of the Crystallinity of CoFeB Layers in Magnetic Random-Access Memory (MRAM) Stacks Using Extended …

Ultrafast manetization enhancement in metallic multilayers driven by superdiffusive spin current

September 4, 2012
Author(s)
Thomas J. Silva, Justin M. Shaw, Hans T. Nembach, Dennis Rudolf, Chan La-O-Vorakiat, Marco Battiato, Roman Adam, Emrah Turgut, Stefan Mathias, Margaret M. Murnane, Henry C. Kapteyn, Claus M. Schneider
Uncovering the physical mechanisms that govern ultrafast charge and spin dynamics is crucial for understanding correlated matter as well as the fundamental limits of ultrafast spin-based electronics. Spin dynamics in magnetic materials can be driven by

Tomographic Reconstruction of the Local PDFS of Soot Volume Fraction and Temperature

April 23, 1995
Author(s)
Y. R. Sivathanu, Anthony Hamins, Robert Hagwood, Takashi Kashiwagi
Deconvolution of local properties from line-of-sight measurements is important in a wide variety of applications such as x-ray tomography, nuclear magnetic resonance imaging, atmospheric sciences, optical inteferometry and flow field diagnostics. The Radon

Spin Transfer Torques by Point-Contact Spin injection

August 24, 2009
Author(s)
Tingyong Chen, Yi Ji, S X. Huang, C L. Chien, Mark D. Stiles
Spin-transfer torques (STT) provide a new mechanism to alter the magnetic configuration in magnetic heterostructures, a feat previously only achieved by an external magnetic field. A current flowing perpendicular through a noncollinear magnetic spin

SEMPA Imaging for Spintronics Applications

January 1, 2007
Author(s)
John Unguris, Daniel T. Pierce, Seok-Hwan Chung
Scanning Electron Microscopy with Polarization Analysis (SEMPA) provides high resolution (10 nm) magnetization images simultaneously with, but independent of, the topography. Such information is very useful in studying spintronics devices as illustrated by

Vortex Pinning in Microindented Yba 2 Cu 3 O 7-x Single Crystals

August 1, 2000
Author(s)
Marina Turchinskaya, Douglas T. Smith, Alexander L. Roytburd, Debra L. Kaiser
A high resolution magneto-optical technique with a magnetic indicator film was used to study the effect of a regular array of micrometer-sized mechanical indentations on magnetization dynamics at the surface of a twinned single crystal of Yba 2Cu 3O 7-δ as

Multiphase Magnetism in Yb 2 Ti 2 O 7

November 3, 2020
Author(s)
Allen Scheie, Jonas Kindervater, Shu Zhang, Hitesh Changlani, G. Sala, Georg Ehlers, Andre Heinemann, Gregory Tucker, Seyed Koohpayeh, Collin L. Broholm
… Multiphase Magnetism in Yb 2 Ti 2 O 7 …

Measurement of the magnet system for the QEMMS

August 22, 2020
Author(s)
Rafael Marangoni, Darine El Haddad, Frank C. Seifert, Leon S. Chao, David B. Newell, Stephan Schlamminger
… Measurement of the magnet system for the QEMMS …

Magnetic Trapping of Ultracold Neutrons

January 1, 2001
Author(s)
C R. Brome, J S. Butterworth, K Coakley, Maynard S. Dewey, S N. Dzhosyuk, R G. Golub, K Habicht, P R. Huffman, Steve K. Lamoreaux, C E. Mattoni, D N. McKinsey, Fred E. Wietfeldt, John M. Doyle
… Magnetic Trapping of Ultracold Neutrons …
Displaying 1676 - 1700 of 3361
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