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Search Publications

NIST Authors in Bold

Displaying 1176 - 1200 of 3361

Thermal Relaxation Rates of Magnetic Nanoparticles in the Presence of Fields and Spin-Transfer Effects

August 29, 2011
Author(s)
William H. Rippard, Ranko R. Heindl, Matthew R. Pufall, Stephen E. Russek, Anthony B. Kos
… unstable ferromagnetic nanoparticle incorporated into a magnetic tunnel junction (MTJ) as a function of applied magnetic field and voltage V (-0.38 V {less than or equal to} … implications for designs of future nanometer-scale magnetic random access memory (MRAM) elements and provide a …

Chip scale atomic magnetometers

April 19, 2006
Author(s)
John M. Moreland, John Kitching, Peter D. Schwindt, Svenja A. Knappe, Li-Anne Liew, V Shah, V Gerginov, Ying-Ju Wang, Leo W. Hollberg
We are developing a new class of sensors based on atoms confined in micro-fabricated enclosures. Recent work at the National Institute of Standards and Technology (NIST) has lead to a prototype chip scale atomic clock (CSAC) with remarkable operating

Current-driven switching in a single exchange-biased ferromagnetic layer

July 9, 2004
Author(s)
Tingyong Chen, Yi Ji, C Chien, Mark D. Stiles
We demonstrate spin-transfer torque effects in a single exchange-biased ferromagnetic layer. A current through a point contact to the exchange-biased Co layer reverses the magnetization of a nanodomain in the layer hysteretically for low applied magnetic

Thermal effects on the critical current of spin torque switching in spin valve nanopillars

February 28, 2007
Author(s)
Michael Schneider, Matthew Pufall, William Rippard, Stephen E. Russek, Jordan A. Katine
In spin valve nanopillars, temperature affects the spin torque reversal of the free magnetic layer. The authors compare values of zero temperature critical switching current I c0 extrapolated from room temperature pulsed current switching measurements to

Ferromagnetic Resonance Spectroscopy with a Micromechanical Calorimeter Sensor

August 1, 2000
Author(s)
John M. Moreland, M. Loehndorf, Pavel Kabos, Robert McMichael
We describe a new type of ferromagnetic resonance (FMR) spectroscopy that is based on a calorimeter sensor. We use an atomic force microscopy cantilever coated with a ferromagnetic thin film as a bimaterial sensor to measure absorption of microwaves at 9

Electric-Field Induced Reversible Switching of the Magnetic Easy Axis in Co/BiFeO 3 on SrTiO 3

April 18, 2017
Author(s)
Tieren Gao, Xiaohang Zhang, William D. Ratcliff, Shingo Maruyama, Makoto Murakami, Anbusathaiah Varatharajan, Zahra Yamani, Peijie Chen, Ke Wang, Huairuo Zhang, Robert D. Shull, Leonid A. Bendersky, John Unguris, R. Ramesh, Ramamoorthy Ramesh, I. Takeuchi
… reversible electric-field-induced switching of the magnetic state of the Co layer in Co/BiFeO 3 (BFO) (001) thin … To explore applications of the electric-field-tunable magnetic easy axis in electronic devices, we have fabricated … Electric-Field Induced Reversible Switching of the Magnetic Easy Axis in Co/BiFeO 3 on SrTiO 3 …

A New Microdevice for SI-Traceable Forces in Atomic Force Microscopy

June 2, 2008
Author(s)
Gregory W. Vogl, Jason J. Gorman, Gordon A. Shaw, Jon R. Pratt
A new self-excited micro-oscillator is proposed as a velocity standard for dissemination of nanoNewton-level forces that are traceable to the International System of Units (SI). The microfabricated oscillator is top-coated with magnetic thin films and

Magnetic Properties of Low-Moment Ferrimagnetic Heusler Cr 2 CoGa Thin Films Grown via Molecular Beam Epitaxy

October 31, 2016
Author(s)
Michelle Elizabeth Jamer, George E. Sterbinsky, Matthew C. DeCapua, Gabriel Player, Don Heiman
… theorists have predicted many materials with a low magnetic moment and large spin-polarization for spintronic … molecular beam epitaxy. The present films exhibit a low magnetic moment from antiferromagnetically coupled Cr and Co … atoms as measured with SQUID magnetometry and soft X-ray magnetic circular dichroism. …

Muon Spin Relaxation and Electron/Neutron Diffraction Studies of BaTi 2 (As 1-x Sb x ) 2 O: Absence of Static Magnetism and Superlattice Reflections

December 6, 2013
Author(s)
Y. Nozaki, K. Nakano, T. Yajima, H. Kageyama, B. Frandsen, L Liu, S. Cheung, T. Goko, Y. J. Uemura, T.S.J. Munsie, T. Medina, G. M. Luke, J. Munevar, D. Nishio-Hamane, Craig Brown
… neutron diffraction , magnetism, muon … Studies of BaTi 2 (As 1-x Sb x ) 2 O: Absence of Static Magnetism and Superlattice Reflections …

High-Pressure Vapor-Liquid Equilibrium Measurements of Methane + Water Mixtures by Nuclear Magnetic Resonance Spectroscopy

October 31, 2023
Author(s)
Samantha Miller, Chris Suiter, Mark O. McLinden, Jason A. Widegren, Nancy Levinger, Bret Windom, Michael Sartini
… in natural gas pipelines. Here we apply 1H nuclear magnetic resonance (NMR) spectroscopy to measure the VLE of … equilibrium (VLE), mixture of methane and water, nuclear magnetic resonance (NMR) spectroscopy, high-pressure zirconia … Measurements of Methane + Water Mixtures by Nuclear Magnetic Resonance Spectroscopy …

Construction of phantoms for MR Electrical Properties Tomography (from structure to composition): A Guideline from the ISMRM Electro-Magnetic Tissue Properties Study Group

August 20, 2025
Author(s)
Ilias Giannakopoulos, ALESSANDRO ARDUINO, Cornelis van den Berg, Zhongzheng He, Kyu-Jin Jung, Riccardo Lattanzi, Jessica Martinez Martinez, Thierry Meerbothe, Freddy Odille, Adriano TROIA, Luca Zilberti, Stefano Mandija
… Journal of Magnetic Resonance Imaging … to composition): A Guideline from the ISMRM Electro-Magnetic Tissue Properties Study Group …
Displaying 1176 - 1200 of 3361
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