Defect formation in epitaxial crystal growth
نویسندگان
چکیده
منابع مشابه
In situ observation of antisite defect formation during crystal growth.
In situ x-ray diffraction (XRD) coupled with molecular dynamics (MD) simulations have been used to quantify antisite defect trapping during crystallization. Rietveld refinement of the XRD data revealed a marked lattice distortion which involves an a axis expansion and a c axis contraction of the stable C11b phase. The observed lattice response is proportional in magnitude to the growth rate, su...
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A pattern of repulsive, charged lines is shown to direct three-dimensional (3D) crystallization in a system of long-range repulsive, density-matched colloids. At volume fractions where the bulk phase behavior leads to bcc crystallization, the 1D template was found to induce formation of a metastable fcc crystal. The bcc crystals were oriented with the (100) or the (110) plane, with twofold twin...
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Nacre is the iridescent inner lining of many mollusk shells, with a unique lamellar structure at the sub-micron scale, and remarkable resistance to fracture. Despite extensive studies, nacre formation mechanisms remain incompletely understood. Here we present 20-nm, 2°-resolution polarization-dependent imaging contrast (PIC) images of shells from 15 mollusk species, mapping nacre tablets and th...
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Electron backscatter diffraction analysis of dendritic clinopyroxene (cpx) forming in rapidly cooled basalt reveals two features that are unexpected for phases growing from a liquid: (1) helical growth about {010}cpx, the crystallographic b-axis, with incremental rotation (up to 0.4° μm–1) within branch segments and large rotational jumps (10°–46°) between closely spaced branch segments, and (2...
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ژورنال
عنوان ژورنال: Journal of Electronic Materials
سال: 1991
ISSN: 0361-5235,1543-186X
DOI: 10.1007/bf02653317