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Search Publications by: Cedric J Powell (Assoc)

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Displaying 351 - 375 of 378

Cross Sections for Ionization of Inner-shell Electrons by Electrons

January 1, 1976
Author(s)
Cedric J. Powell
A survey is given of the available cross-section data for ionization of inner-shell electrons by incident electrons in the range of interest for electron-probe microanalysis and for Auger-electron spectroscopy of solid surfaces. Owing to the paucity of

Attenuation Lengths of Low-Energy Electrons in Solids

July 1, 1974
Author(s)
Cedric J. Powell
A compilation is presented of measured attenuation lengths of low-energy electrons in solids in the energy range (40 to 2000 eV) normally employed in X-ray photoelectron and Auger-electron spectroscopy. The techniques used to obtain electron attenuation

Contrasting Valence-Band Auger-Electron Spectra for Silver and Aluminum

June 4, 1973
Author(s)
Cedric J. Powell
Measurements of the L 2,3VV (V=valence) Auger spectrum of aluminum and the M 4,5VV Auger spectrum of silver cannot be simply related to the valence-band density of states. The data for Al indicate a strong energy variation of the transition probability

Coercivities Above 10 kOe in CoPd Superlattices

Author(s)
William F. Egelhoff Jr., Cedric J. Powell, L Gan, P J. Chen, H Ettedgui, D Tirosh, Robert D. McMichael, Mark D. Stiles, J Mallett, Alexander J. Shapiro, John E. Bonevich, J H. Judy, Erik B. Svedberg, A. E. Berkowitz
We have achieved excellent grain isolation in CoPd superlattices by using 10 nm Au as both an underlayer and an overlayer and diffusing Au into the grain boundaries by annealing for {approximately equal to} 30 min. at 300 degrees C. The grain isolation

Suppressing of Unidirectional Coupling in Magnetic Tunnel Junctions by Preoxidation: Structural Studies

Author(s)
William F. Egelhoff Jr., Robert D. McMichael, Mark D. Stiles, Cedric J. Powell, John E. Bonevich, M Wormington, D S. Eastwood, B K. Tanner
Pre-oxidation of the bottom electrode prior to deposition of Al_{2}O_{3} or MgO is very effective as a general approach to suppressing the unidirectional coupling that is commonly observed in magnetic tunnel junctions. In this paper, we report structural
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