格子定数




格子定数（こうしていすう、こうしじょうすう、lattice constant）とは、結晶軸の長さや軸間角度のこと。単位格子の各稜間の角度 α,β,γ と、各軸の長さ a,b,c を表す6個の定数である。格子の形状等によっては、aの値のみを表すこともある。


軸の長さの単位は普通オングストロームを用い、自明として単位を付けずに数値のみを書く場合が多い。



関連項目


  • 結晶構造



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