| 释义 |
ˈsuperlattice
[super- 5.]
1. Metallurgy. An ordered arrangement of some of the atoms in a solid solution extending through large parts of it and coexisting with the disorder of the remaining atoms; also, a solid solution possessing this; = superstructure 3.
1932Proc. R. Soc. A. CXXXVI. 211 A structure of this kind is usually termed a superlattice (überstruktur). 1951N. F. M. Henry et al. Interpret. X-Ray Diffraction Photographs xv. 211/1 The use of the word ‘superlattice’ is unfortunate. The original German word Uberstruktur conveyed perfectly the concept of a new type of ordered structure being imposed on the existing disordered phase. This has nothing to do with the type of lattice. 1966C. R. Tottle Sci. Engin. Materials viii. 187 Domains form and grow during normal superlattice formation, according to composition, temperature, and time of annealing. 1967A. H. Cottrell Introd. Metallurgy xiv. 190 When formed from true metals the structure is often an ordered solid solution or superlattice, in which the two species are arranged in some regular alternating pattern. 1978Nature 9 Nov. 168/2 Evidence..that an FeNi L10 superlattice exists in the taenite of the Cape York and Toluca meteorites. 1979[see superstructure 3].
2. Physics. A small-scale periodicity in the composition of a semiconductor.
1970IBM Jrnl. Res. & Devel. XIV. 61 We consider a one-dimensional periodic potential, or ‘super⁓lattice’, in monocrystalline semiconductors formed by a periodic variation of alloy composition or of impurity density during epitaxial growth. 1977McGraw-Hill Yearbk. Sci. & Technol. 380/1 Photocurrent measurements in the superlattice structures have made it possible to observe simultaneously quantum states and associated anomalous conductance. |