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You searched on: Author: robert shull

Displaying records 51 to 60 of 65 records.
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51. Rare-Earth Garnets and Perovskites for Space-Based ADR Cooling at High T and Low H
Published: 3/1/2002
Authors: T T King, B A Rowlett, R A Ramirez, E R Canavan, M J DiPirro, J S Panek, J G Tuttle, Robert D Shull, R A. Fry
Abstract: Future NASA satellite detector systems must be cooled to the 0.1K temperature range to meet the stringent energy resolution and sensitivity requirements demanded by mid-term astronomy missions. The development of adiabatic demagnetization refrigerat ...

52. Direct Experimental Study of the Exchange Spring Formation Process
Published: 2/7/2002
Authors: V S. Gornakov, Valerian Ivanovich Nikitenko, Alexander J. Shapiro, Robert D Shull

53. Features of Domain Nucleation and Growth in Co/Ru/Co Synthetic Antiferromagnets Deposited on Obliquely Sputtered Ta Underlayers
Published: 2/1/2002
Authors: Alexander J. Shapiro, V S. Gornakov, Valerian Ivanovich Nikitenko, Robert D McMichael, William F. Egelhoff Jr., Y W Tahk, Robert D Shull, L Gan
Abstract: Obliquely sputtered Ta underlayers were used to stabilize antiferromagnetically couple Co/Ru/Co/Ta structures with a strong uniaxial anistropy. Magneto-optical indicator film (MOIF) imaging revealed nucleation and growth of domains during remagnetiz ...

54. Spin Spring Behavior in Exchange Coupled Soft and High-Coercivity Hard Ferromagnets
Published: 7/1/2001
Authors: Robert D Shull, Alexander J. Shapiro, V S. Gornakov, Valerian Ivanovich Nikitenko, J.S. Jiang, H Kaper, G Leaf, S D Bader
Abstract: The magnetization reversal processes in an epitaxial Fe/Sm^d2^Co^d7^ structure were investigated using the magneto-optical indicator film technique. The dependence of the magnitude and the orientation of the structure average magnetization have been ...

55. Abstracts for the MSEL Assessment Panel, March 2001
Published: 1/26/2001
Authors: Leslie E Smith, Alamgir Karim, Leonid A Bendersky, C Lu, J J Scott, Ichiro Takeuchi, Kathleen M. Flynn, Vinod K Tewary, Davor Balzar, G A Alers, Stephen E Russek, Charles C. Dr. Han, Haonan Wang, William E Wallace III, Daniel A Fischer, K Efimenko, Wen-Li Wu, Jan Genzer, Joseph C Woicik, Thomas H Gnaupel-Herold, Henry Joseph Prask, Charles F. Majkrzak, Norman F. Berk, John Barker, Charles Joseph Glinka, Eric K Lin, Ward L Johnson, Paul R Heyliger, David Thomas Read, R R Keller, J Blendell, Grady S White, Lin-Sien H Lum, Eric J Cockayne, Igor Levin, C E Johnson, Maureen E Williams, Gery R Stafford, William J Boettinger, Kil Won Moon, Daniel Josell, Daniel Wheeler, Thomas P Moffat, W H Huber, Lee J Richter, Clayton S. Yang, Robert D Shull, R A. Fry, Robert D McMichael, William F. Egelhoff Jr., Ursula R Kattner, James A Warren, Jonathan E Guyer, Steven P Mates, Stephen D Ridder, Frank S. Biancaniello, D Basak, Jon C Geist, Kalman D Migler
Abstract: Abstracts relating to research and development in the NIST Materials Science and Engineering Laboratory (MSEL) are presented for a poster session to be presented to the 2001 MSEL Assessment Panel.

56. Formation of Nanomagnetic Thin Films by Dispersed Fullerenes.
Published: 11/13/2000
Author: Robert D Shull

57. Absolute Magnetic Moment Measurements of Nickel Spheres
Published: 5/1/2000
Authors: Robert D Shull, Robert D McMichael, L Swartzendruber, Stefan D Leigh
Abstract: The preparation and measurement of nickel spheres for use in the calibration of magnetometers are described. The absolute value of the magnetic moment of a set these spheres near room temperature was measured using the Faraday method. The variation ...

58. Asymmetry in Elementary Events of Magnetization Reversal in Ferromagnetic/Antiferromagnetic Bilayers
Published: 1/1/2000
Authors: Valerian Ivanovich Nikitenko, V S. Gornakov, Alexander J. Shapiro, Robert D Shull, K Liu, S M Zhou, C L Chien
Abstract: Real-time magneto-optical indicator film images reveal distinct asymmetry in the motion of a single domain wall in a wedged-NiFe/uniform-FeMn bilayer due to the nucleation and behavior of an exchange spring in the antiferromagnetic layer. Magnetizat ...

59. Characterization of Ternary Compounds in the BaO: Fe^d3^: TiO^d2^ System; Ba^d6^Fe^d45^Ti^d17^ O^d106^ and BaRe^d11^Ti^d3^O^d23^
Published: 11/1/1999
Authors: Terrell A Vanderah, W. Wong-Ng, B H. Toby, V. M. Browning, Robert D Shull, Richard G. Geyer, Robert S. Roth

60. Small Angle Neutron Scattering by the Magnetic Microstructure of Nanocrystalline Ferromagnets Near Saturation
Series: Journal of Research (NIST JRES)
Published: 7/23/1999
Authors: J Weissmuller, Robert D McMichael, A Michels, Robert D Shull
Abstract: The paper presents a theoretical analysis of elastic magnetic small angle neutron scattering (SANS) due to the nonuniform magnetic microstructure in nanocrystalline ferromagnets. The reaction of the magnetization to the magnetoelastic anisotropy fie ...

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