TY - JOUR
T1 - High resolution studies of small particles of gold and silver. I. Multiply-twinned particles
AU - Marks, L. D.
AU - Smith, David J.
N1 - Funding Information:
The Cambridge University 600 kV high resolution electron microscope has been built as a joint project between the Cavendish Laboratory and the Department of Engineering with major financial support from the Science Research Council, from which con- tinued support is gratefully acknowledged. We thank Dr. A. Howie for many useful discussions.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1981/9
Y1 - 1981/9
N2 - The structure of multiply-twinned particles of gold and silver found in the early stages of particulate growth has been studied using direct lattice imaging methods with the Cambridge University 600 kV high resolution electron microscope. There was widespread evidence for the presence of strain-relieving partial dislocations in icosahedral particles. However, the possibility of imaging artefacts arising from double diffraction due to overlapping tetrahedral projections needed to be excluded, for example by slight particle tilting, before the actual presence of the dislocations was substantiated. An analysis of particle geometry, also including the effects of inhomogeneous strain, showed that straight Moiréfringes did not necessarily indicate the absence of strain within a particle. Moreover, it has been shown that, in some particle orientations, two different, though very similar, Moiré fringes can arise with their interaction and final appearance being very dependent on particle orientation.
AB - The structure of multiply-twinned particles of gold and silver found in the early stages of particulate growth has been studied using direct lattice imaging methods with the Cambridge University 600 kV high resolution electron microscope. There was widespread evidence for the presence of strain-relieving partial dislocations in icosahedral particles. However, the possibility of imaging artefacts arising from double diffraction due to overlapping tetrahedral projections needed to be excluded, for example by slight particle tilting, before the actual presence of the dislocations was substantiated. An analysis of particle geometry, also including the effects of inhomogeneous strain, showed that straight Moiréfringes did not necessarily indicate the absence of strain within a particle. Moreover, it has been shown that, in some particle orientations, two different, though very similar, Moiré fringes can arise with their interaction and final appearance being very dependent on particle orientation.
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U2 - 10.1016/0022-0248(81)90494-2
DO - 10.1016/0022-0248(81)90494-2
M3 - Article
AN - SCOPUS:0000112780
SN - 0022-0248
VL - 54
SP - 425
EP - 432
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - 3
ER -