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lattice constant |
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lattice constant [′lad·əs ‚kän·stənt] (crystallography) A parameter defining the unit cell of a crystal lattice, that is, the length of one of the edges of the cell or an angle between edges. Also known as lattice parameter. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| AT&T's materials are strained becausethe lattice constant -- the natural distance between atoms in a crystal -- of silicon is smaller than that of germanium. By regulating the composition of the quantum well layers that constitute the light-emitting area, and using a crystal with a smaller lattice constant than the substrate, tensile strain is introduced into the quantum well layers. His initial structure, based on his often successful method of fitting atoms together, had a face centered cubic unit cell with a lattice constant of 2. |
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