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reciprocal lattice

   Also found in: Wikipedia 0.01 sec.
reciprocal lattice [ri′sip·rə·kəl ′lad·əs]
(crystallography)
A lattice array of points formed by drawing perpendiculars to each plane(hkl)in a crystal lattice through a common point as origin; the distance from each point to the origin is inversely proportional to spacing of the specific lattice planes; the axes of the reciprocal lattice are perpendicular to those of the crystal lattice.


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Two model examples--hexamethylbenzene, a centrosymmetric crystal with both covalent and Van der Waals bonds, and anhydrous alum, a nocentrosymmetric structure typical of ceramics and metals--are chosen as model crystals and used to explain symmetry, point groups, space groups, Bravais lattices, reciprocal lattices, and diffraction maxima.
The energies of the extrema of the conduction and valence sub-bands are referenced to the bottom of the conduction sub-band at the [GAMMA] symmetry point in the Brillouin zone of the reciprocal lattice space.
6) In the early part of this century, x-ray crystallographers developed the concept of the reciprocal lattice, and the importance of the Fourier Transform (FT) to the process of diffraction became appreciated.
 
 
 
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