出典:Wiktionary
出典:『Wiktionary』 (2025/11/11 13:44 UTC 版)
lattice constant (plural lattice constants)
出典:Wikipedia
出典:『Wikipedia』 (2011/03/27 17:25 UTC 版)
The lattice constant [or lattice parameter] refers to the constant distance between unit cells in a crystal lattice. Lattices in three dimensions generally have three lattice constants, referred to as a, b, and c. However, in the special case of cubic crystal structures, all of the constants are equal and we only refer to a. Similarly, in hexagonal crystal structures, the a and b constants are equal, and we only refer to the a and c constants. A group of lattice constants could be referred to as lattice parameters. However, the full set of lattice parameters consist of the three lattice constants and the three angles between them.