BODY-CENTERED CUBIC The relation between cube edge length a and the atomic V3a radius R. 4R 3a =4R a=3 Q 原子堆砌密度 Atomic packing factor,APF APF= (4/3πR3) 2a =0.68 (4R/3)3 PDF文件使用"pdfFactory Pro”试用版本创建ww,fineprint.com.cn 3a 3a = 4R 2a a BODY-CENTERED CUBIC 原子堆砌密度 Atomic packing factor, APF 3 4R a = 0.68 (4 / 3) 2(4/3 ) APF 3 3 = = R pR The relation between cube edge length a and the atomic radius R: PDF 文件使用 "pdfFactory Pro" 试用版本创建 ÿwww.fineprint.com.cn