Issue 10 Volume 41 May 16, 2003

large enough, the device cannot be turned off, even at zero volts applied, and the device is said to have failed by going
depletion mode.
Author
Ionizing Radiation; Dosage; Transistors; Radiation Effects; Depletion; Cmos
20030032341 NASA Glenn Research Center, Cleveland, OH, USA, Ohio Aerospace Inst., Cleveland, OH, USA
Atomistic Modeling Of Co Growth On Cu(111]
Khalil, Joseph; Bozzolo, Guillermo; Farias, Daniel; deParga, Vazquez; deMiguel, J. J.; Miranda, R.; [2002]; 6 pp.; In English;
Materials Research Society Symposium, 2002; On original document some information was cut off on left side of two pages
and right side of two. There are also black and white illustrations.
Contract(s)/Grant(s): NCC3-594; Copyright; Avail: CASI; A02, Hardcopy
The BFS method for alloys is applied to the study of Co growth on Cu(111). The parameterization of the Co-Cu system
is obtained from first-principles calculations, and tested against known experimental features for low coverage Co deposition
on Cu(100) and Cu(111). Atomistic simulations are performed to investigate the behavior of Co on Cu(111) as a function of
coverage.
Author
Cobalt; Copper; Mathematical Models; Crystal Growth; Atomic Theory
20030033894 Helsinki Univ. of Technology, Espoo
Investigations of Solid-Liquid Interfaces in Helium at Ultralow Temperatures
Tsepelin, V.; 2001; 44 pp.
Report No.(s): PB2003-102631; Copyright; Avail: National Technical Information Service (NTIS)
This thesis describes ultralow temperature studies of helium quantum crystals. Owing to the surrounding super fluid, small
latent heat of crystallization and correspondingly short relaxation times, which are unreachable in ordinary crystals, helium
crystals offer a unique and clean modeling system to study surface phenomena in a solid. The measurements of the crystal
shape and growth rates are essential in providing the microscopic understanding of crystal growth.
NTIS
Helium; Crystal Growth; Cryogenic Temperature
20030036915 Iowa State Univ., Ames. Dept. of Materials Science and Engineering
Analysis of Gd(Sub 5)(Si(Sub 2)Ge(Sub 2)) Microstructure and Phase Transition
Meyers, J. S.; 2002; 64 pp.
Report No.(s): DE2002-803738; No Copyright; Avail: Department of Energy Information Bridge
With the recent discovery of the giant magnetocaloric effect and the beginning of extensive research on the properties of
Gd(Sub 5)(Si(Sub X)Ge(Sub 1-X)(Sub 4)), a necessity has developed for a better understanding of the microstructure and
crystal structure of this family of rare earth compounds with startling phenomenological properties. The aim of this research
is to characterize the microstructure of the Gd(Sub 5)(Si(Sub X)Ge(Sub 1-X)(Sub 4)) withX=2anditsphase change by using
both transmission and electron microscopes.
NTIS
Crystal Structure; Microstructure; Rare Earth Compounds
20030036940 National Inst. of Standards and Technology, Gaithersburg, MD
Determination of the Single Crystal Elastic Constants by Diffraction from a Cubic Polycrystal
DeWit, R.; 2003; 24 pp.
Report No.(s): PB2003-102250; NISTIR-6944; No Copyright; Avail: CASI; A03, Hardcopy
Using the theory of statistical continuum mechanics, closed expressions are derived for the diffraction elastic constants
of a cubic polycrystal that is statistically homogeneous, isotropic, and disordered. By measuring these constants for several
diffracting planes of a single polycrystal, the single crystal elastic constants are determined.
NTIS
Elastic Properties; Polycrystals; Single Crystals; Diffraction
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