点缺陷 (a) (b) (c) Vacancy Insterstitial atom Small substitutianl atom (d) (e) (⑤ Large substitutianl atom Frenkel Defect Schottky defect(a) (b) (c) (d) (e) (f) Vacancy Insterstitial atom Small substitutianl atom Large substitutianl atom Frenkel Defect Schottky defect 点缺陷