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Search Publications by: Cedric J Powell (Assoc)

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Displaying 251 - 275 of 378

Quantitative Surface Analysis for Catalysts by Electron Spectroscopy

July 1, 1998
Author(s)
H Shimada, Cedric J. Powell
An overview is given of a new cooperative project under the Implementing Agreement between the Technology Administration, U.S. Department of Commerce, and the Agency of Industrial Science and Technology, Japanese Ministry of International Trade and

Optimizing GMR Spin Valves: The Outlook for Improved Properties

June 1, 1998
Author(s)
William F. Egelhoff Jr., P J. Chen, Cedric J. Powell, D Parks, Robert McMichael, J Judy, D Martien, A. E. Berkowitz, J M. Daughton
The current generation of giant magnetoresistance (GMR) spin valves exhibits performance characteristics which are not quite as good as desired for ultrahigh-density nonvolatile memory applications. This paper addresses the scientific issues underlying the

Surface Sensitivity of Auger-Electron Spectroscopy and X-Ray Photoelectron Spectroscopy

February 1, 1998
Author(s)
Cedric J. Powell, Aleksander Jablonski, I S. Tilinin, S Tanuma, David R. Penn
A convenient measure of surface sensitivity in Auger-electron spectroscopy (AES) and x-ray photoelectron spectroscopy (XPS) is the mean escape depth (MED). If the effects of elastic-electron scattering are neglected, the MED is equal to the electron

Inelastic Electron Scattering in Auger Electron Spectroscopy

January 1, 1998
Author(s)
R Shimizu, Cedric J. Powell
The International Union for Vacuum Science, Technique and Applications (IUVSTA) has established a workshop programme to provide a forum for intense scientific debate and discussion between a small number of experts in a focused scientific field that falls

Oxygen as a Surfactant in the Growth of Giant Magnetoresistance Spin Valves

January 1, 1998
Author(s)
P J. Chen, Cedric J. Powell, Mark D. Stiles, Robert McMichael, J Judy, K Takano, A Berkowitz
We have found a novel method for increasing the giant magnetoresistance (GMR) of Co/Cu spin valves with the use of oxygen. Surprisingly, spin valves with the largest GMR are not produced in the best vacuum. Introducing 5x10 -9 Torr (7x10 -7 Pa) into our
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