growth twin

2009 ◽  
pp. 405-405
Keyword(s):  
Growth Twin

scholarly journals Growth twin crystals of aluminum and aluminum-base alloys

1969 ◽  
Vol 19 (7) ◽  
pp. 279-286 ◽  
Author(s):  
Shuichiro WATANABE ◽  
Umeo HONMA ◽  
Shigeo OYA
Keyword(s):  
Growth Twin ◽  
Aluminum Base

CdSxTe1-x: bulk vapour growth, twin formation and the electrical activity of twin boundaries

2002 ◽  
Vol 35 (16) ◽  
pp. 1997-2007 ◽  
Author(s):  
K Durose ◽  
A J W Yates ◽  
A Szczerbakow ◽  
J Domagala ◽  
Z Golacki ◽  
...  
Keyword(s):  
Electrical Activity ◽  
Twin Boundaries ◽  
Growth Twin ◽  
Twin Formation

Growth, twin and domain structure studies of superconducting Bi2Sr2Ca1−xYxCu2O8+δ single crystals

1993 ◽  
Vol 215 (3-4) ◽  
pp. 429-434 ◽  
Author(s):  
R. Jayavel ◽  
A. Thamizhavel ◽  
P. Murugakoothan ◽  
C. Subramanian ◽  
P. Ramasamy
Keyword(s):  
Single Crystals ◽  
Domain Structure ◽  
Growth Twin

7Li and87Rb nuclear magnetic resonance in a LiRbSO4single crystal with the growth twin domain

2001 ◽  
Vol 13 (9) ◽  
pp. 2025-2031 ◽  
Author(s):  
Ae Ran Lim ◽  
Dong Young Jeong ◽  
Jin Ho Kim ◽  
Jong Hoon Hahn
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Twin Domain ◽  
Growth Twin ◽  
Nuclear Magnetic

Structure and complex twinning of dysprosium disilicate (Dy2Si2O7), Type B

2000 ◽  
Vol 56 (6) ◽  
pp. 940-946 ◽  
Author(s):  
Michael E. Fleet ◽  
Xiaoyang Liu
Keyword(s):  
Earth Element ◽  
Unit Cell ◽  
Type B ◽  
Continuous Transition ◽  
Space Group ◽  
X Ray ◽  
Mean Size ◽  
Growth Twin ◽  
Crystal Synthesis ◽  
The Mean

Dysprosium disilicate (Dy2Si2O7) is triclinic with a = 6.6158 (2), b = 6.6604 (2), c = 12.0551 (4) Å, α = 94.373 (2), β = 90.836 (2), γ = 91.512 (2)°, V = 529.4 (1) Å3, space group P\overline 1, Z = 4 and D x  = 6.156 g cm−3. The structure (single-crystal X-ray, R = 0.033, wR = 0.041) is built from a linear triple tetrahedral group [Si3O10] and isolated [SiO4] tetrahedron cross-linked by Dy3+ in one sixfold and three eightfold coordinated positions, and corresponds to the presently revised type B structure of Ho2Si2O7. The formation of the unusual linear triple tetrahedral group in the type B structure allows for a more continuous transition in the mean size of REE3+O n (REE = rare earth element) polyhedra in REE disilicates through the 4f transition metal series. The crystal of Dy2Si2O7 investigated was complexly twinned such that the diffraction pattern was also consistent with a larger dimensionally monoclinic unit cell (a = 22.5354, b = 14.2102, c = 6.6158 Å, β = 91.788°), which resulted in an apparent superstructure of the type B structure in space group C1¯. Lattice coincidence with the type B unit cell appears to have been maintained during crystal synthesis and quenching by the complex sector-zoned growth twin.

scholarly journals Growth of growth twin crystals in aluminum and aluminum-base alloys

1972 ◽  
Vol 22 (2) ◽  
pp. 143-150 ◽  
Author(s):  
Shintaro MIYAZAWA ◽  
Umewo HONMA ◽  
Shigeo OYA
Keyword(s):  
Growth Twin ◽  
Aluminum Base

growth twin

2014 ◽  
pp. 651-651
Keyword(s):  
Growth Twin

Structure Determination of Tilt Boundaries in Gold by High Resolution Electron Microscopy

1986 ◽  
Vol 82 ◽  
Author(s):  
William Krakow ◽  
David A. Smith
Keyword(s):  
High Resolution ◽  
Structure Determination ◽  
Rotation Axis ◽  
Three Dimensional ◽  
High Resolution Electron Microscopy ◽  
Transmission Microscopy ◽  
Resolution Electron ◽  
Tilt Boundaries ◽  
Growth Twin

ABSTRACTA number of tilt grain boundaries prepared from evaporated gold thin films have been investigated by high resolution transmission microscopy. When the grain boundary is parallel to the electron beam and the beam is parallel to a low index rotation axis such as [110] or [001]it is possible to identify atomic positions at the cores of these boundaries as demonstrated here by a Σ = 3 70.5°/[110], (112) growth twin. In many cases it is not possible to make a full atomistic structure determination because the specimen does not have translational periodicity in the beam direction. This may be because the boundary plane is not parallel to the beam or the specimen contains dislocations which have a component of Burgers vector parallel to the beam. Examples are given of various low angle boundary structures in goldwhere there are complications because of the three dimensional nature of their structure.

The mechanism of growth-twin formation in zincblende crystals: new insights from a study of magnetic liquid encapsulated Czochralski-grown InP single crystals

1998 ◽  
Vol 187 (1) ◽  
pp. 9-17 ◽  
Author(s):  
H Chung ◽  
M Dudley ◽  
D.J Larson ◽  
D.T.J Hurle ◽  
D.F Bliss ◽  
...  
Keyword(s):  
Single Crystals ◽  
Magnetic Liquid ◽  
Growth Twin ◽  
Twin Formation ◽  
Mechanism Of Growth

Uniaxial Compression Behavior of Bulk Nano-twinned Gold from Molecular Dynamics Simulation

2007 ◽  
Vol 1049 ◽  
Author(s):  
Chuang Deng ◽  
Frederic Sansoz
Keyword(s):  
Molecular Dynamics ◽  
Twin Boundary ◽  
Uniaxial Compression ◽  
Constant Strain Rate ◽  
Dynamics Simulation ◽  
Boundary Slip ◽  
Growth Twin ◽  
Dynamics Simulations ◽  
Atomic Analysis ◽  
Bulk Gold

AbstractParallel molecular dynamics simulations were used to study the influence of pre-existing growth twin boundaries on the slip activity of bulk gold under uniaxial compression. The simulations were performed on a 3D, fully periodic simulation box at 300 K with a constant strain rate of 4×107 s−1. Different twin boundary interspacings from 2 nm to 16 nm were investigated. The strength of bulk nano-twinned gold was found to increase as the twin interspacing was decreased. However, strengthening effects related to the twin size were less significant in bulk gold than in gold nanopillars. The atomic analysis of deformation modes at the twin boundary/slip intersection suggested that the mechanisms of interfacial plasticity in nano-twinned gold were different between bulk and nanopillar geometries.

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