The defect character of interface junction lines

1997 ◽  
Vol 4 (1-2) ◽  
Author(s):  
G.P. Dimitrakopulos ◽  
TH. Karakostas ◽  
R.C. Pond
Keyword(s):  
Defect Character

scholarly journals Defect Character at Grain Boundary Facet Junctions: A Combined HRSTEM and Atomistic Modeling Study of a Σ=5 Grain Boundary in Fe

2015 ◽  
Vol 21 (S3) ◽  
pp. 1455-1456
Author(s):  
D.L. Medlin ◽  
K. Hattar ◽  
J. Zimmerman ◽  
F. Abdeljawad ◽  
S.M. Foiles
Keyword(s):  
Grain Boundary ◽  
Atomistic Modeling ◽  
Boundary Facet ◽  
Defect Character ◽  
Modeling Study

The structure of hydrohematite

1981 ◽  
Vol 154 (1-2) ◽  
Author(s):  
Emilia Wolska
Keyword(s):  
Bound Water ◽  
Weakly Bound ◽  
X Ray ◽  
Defect Character

AbstractHydrohematite beside ‘weakly bound’ water removable at 160 – 200° C, contains about 3–4.5 % of tightly held HAccurate measurements of X-ray reflection intensities of hydrohematites revealed a decrease in intensity of all reflections due to FeThe results obtained agree well with the calculated values for the model assumed and fully confirm the defect character of hydrohematite structure. Thus the formula of hydrohematite should be written Fe

The effects of defect character on hydrogen diffusion in metals

1983 ◽  
Vol 2 (9) ◽  
pp. 475-479 ◽  
Author(s):  
C. N. Park ◽  
Jai-Young Lee ◽  
G. W. Hong
Keyword(s):  
Hydrogen Diffusion ◽  
Defect Character

The defect character of GaN growth on r-plane sapphire

2010 ◽  
Vol 107 (7) ◽  
pp. 073525 ◽  
Author(s):  
J. Smalc-Koziorowska ◽  
G. Tsiakatouras ◽  
A. Lotsari ◽  
A. Georgakilas ◽  
G. P. Dimitrakopulos
Keyword(s):  
Defect Character

The Character of Steps on Gamma/Alpha-2 Interfaces in a Low Misfit Lamellar TiAl-Based Alloy

1998 ◽  
Vol 552 ◽  
Author(s):  
P. Shang ◽  
T.T. Cheng ◽  
M. Aindow
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Partial Dislocation ◽  
Dislocation Model ◽  
Topological Theory ◽  
Transmission Electron ◽  
Interfacial Defects ◽  
Lattice Images ◽  
Atomically Flat ◽  
Defect Character

ABSTRACTThe defect character of steps on lamellar γ/α2 interfaces in a quinternary TiAl-based alloy has been studied using high resolution transmission electron microscopy. The interfaces consisted of atomically flat coherent terraces separated by interfacial steps across equal even numbers of {111}γ and (0002)α2 planes. Circuit mapping was used to identify the Burgers vectors of these steps from lattice images obtained at [101]γ and [110]γ zone axes. It was found that the Burgers vectors exhibited by the two-layer steps are different from those reported previously and are consistent with those expected for perfect disconnections as described by Pond's topological theory of interfacial defects, and not with the usual partial dislocation model.

Depth-Dependent Character of Extended Defects in Ion-Implanted and RTA'd Si

1987 ◽  
Vol 104 ◽  
Author(s):  
Rodney A. Herring
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
High Energy ◽  
Dislocation Network ◽  
Extended Defects ◽  
Transmission Electron ◽  
Buried Layer ◽  
The Difference ◽  
Defect Character ◽  
Ion Implanted

ABSTRACTThe character of extended defects formed in high-energy S-ion implanted and rapid thermal annealed (RTA'd) Si has been found by transmission electron microscopy (TEM) to be dependent on the depth at which the defects have formed in the ion-implanted regions. Si implanted with 6 MeV S-ions and RTA'd at 1000°C for 10 s showed a buried layer of extended defects with unfaulted loops towards the top and faulted loops towards the bottom. At higher S fluences, all the loops were unfaulted, some loops coalesced to form a dislocation network, and SiS precipitates were formed. At higher RTA temperatures, all the loops were unfaulted. A few possibilities that could explain the difference in defect character will be discussed.

The Defect Character of Carbon Nanotubes and Nanoparticles

1997 ◽  
Vol 53 (3) ◽  
pp. 341-351 ◽  
Author(s):  
G. P. Dimitrakopulos ◽  
V. P. Dravid ◽  
Th. Karakostas ◽  
R. C. Pond
Keyword(s):  
Carbon Nanotubes ◽  
Defect Character
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