磁铅石结构晶体 LaMgAl_(11)O_(19)形态学  

CRYSTAL MORPHOLOGY OF MAGNETOPLUMBITE LaMgAl_(11)O_(19)

作　　者：徐军[1] 马笑山[1] 沈雅芳[1] 张新民[1] 吴光照[1] 胡少波[2] 

机构地区：[1]中国科学院上海光学精密机械研究所 [2]上海科学技术大学

出　　处：《材料科学进展》1991年第6期502-507,共6页

摘　　要：沿 a,b 轴生长了 LaMgAl_(11)O_(19)单晶,用 X 射线和光学方法测定了各显露面的密勒指数,利用 Hartman-Perdok 的 PBC 理论,计算了几个重要显露面的吸附能,根据吸附能的大小判断了显露顺序,理论结果与实验相符。Crystals LaMgAl_(11)O_(19) have been grown along α or b axis by usingCzochralski technique.The orientations of all the developed facets on the crystals havebeen determined by means of X-ray and optical methods.Based on Hartman′s theory,the strong PBC vectors are found out.F-faces are defined and compound withmicro-computer.The attachment energies were calculated for various faces and the rela-tions between morphology of the magnetoplumbite type crystal and its structure were ex-plained

关 键 词：磁铅石 晶体 结构 磁性材料 形态 

分 类 号：TM277.201[一般工业技术—材料科学与工程]