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Search Publications by: Robert D. Shull (Assoc)

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Displaying 176 - 188 of 188

Absolute Magnetic Moment Measurements of Nickel Spheres

May 1, 2000
Author(s)
Robert D. Shull, Robert D. McMichael, L Swartzendruber, Stefan D. Leigh
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 variations of

Characterization of Ternary Compounds in the BaO:Fe 2 O 3 :TiO 2 System: Ba 6 Fe 45 Ti 17 O 106 and BaFe 11 Ti 3 O 23

January 1, 1999
Author(s)
Terrell A. Vanderah, Winnie K. Wong-Ng, B H. Toby, V. M. Browning, Robert D. Shull, Richard G. Geyer, Robert S. Roth
Single crystals of Ba 6Fe 45Ti 17O 106 and BaFe 11Ti 3O 23 were obtained as major and minor co-products, respectively, by slow-cooling an off-stoichiometric BaO:Fe 2O 3:TiO 2 melt. The former compound exhibits variable stoichiometry Ba 6Fe 48-xTi 14+xO 106

Magneto-Optical Measurements of Co-Pt (111) Multilayers

January 1, 1999
Author(s)
R A. Fry, Lawrence H. Bennett, Edward Della Torre, Robert D. Shull, William F. Egelhoff Jr., R F. Farrow, C H. Lee
An automated magneto-optical Kerr effect (MOKE) magnetometer was used to measure the polar Kerr rotation and ellipticity loops of multilayers with X = 0.3 nm to 1.2 nm. For most of the samples studies, the hysteresis loops exhibit typical perpendicular

Mossbauer Study of NaCl-Coated Fe Nanoparticles

January 15, 1998
Author(s)
Alexander J. Shapiro, Robert D. Shull, N Gorshkov, Michael R. Zachariah
The potential use of magnetic nanoparticles as a very efficient refrigerant for magnetic refrigerators at temperatures well above 4.2 K was recently suggested [1,2]. Suitable for this purpose NaCl-coated iron nanoparticles were synthesized in a sodium