逆位相境界

anti-phase boundary

[目次：結晶等(結晶構造／材料試料)]

結晶中で原子の配列に関する位相が180度(半周期)ずれている境界。二元合金の規則相で頻繁に現れる。

"Anti-phase boundary" separates two adjacent crystals which have the same crystallographic orientation but have a 180°phase shift (a shift of half period) each other. Anti-phase boundaries frequently appear in the ordered phase of a binary alloy.