YBa2Cu3O7-δ晶体的反射率特征研究  

INVESTIGATION ON THE CHARACTERISTICS OF REFLECTIVITY OF YBa2Cu3O7-δ CRYSTAL

作　　者：徐洪武[1] 杨南如[1] 段薇心 王雪峰[1] 

机构地区：[1]南京化工学院硅酸盐工程系 [2]江苏省冶金地质研究所

出　　处：《南京化工学院学报》1991年第2期7-11,共5页

基　　金：化工部“七五”重点攻关基金资助的课题

摘　　要：利用光电倍增管显微光度计对YBa2Cu3O7-δ晶体在不同波长入射光下的反射率值进行了测定，并据此绘制了该晶体的反射率色散曲线，由此得知，YBa2Cu3O7-δ晶体在四个标准波长λ＝470，546，589，650nm的入射光下的反射率值，Rg分别为15.74%,16.33%,16.25%,16.47%,Rm或Rp分别为11.55%,12.01%,11.80%,11.72%。根据实验结果和理论分析可以推知，YBa2Cu3O7-δ晶体的反射光性方位为：Rp=α，Rm=b,Rg=c;其c轴方向上的反射色颜色指数Rvis=16.3,λd=611,Pe=0.0567;α或b轴方向上的反射色颜色指数Rvis=11.95,λd=-502,Pe=0.0609。By using the photoelectric-multiplier-microphotometer, the reflectivity values of YBa_2Cu_3O_(7-δ) crystal with different wave lengths have been measured, and the reflectivity dispersion curve of this crystal has been drawn. The reflectivity values of YBa_2Cu_3O_(7-δ) crystal with four standard wave lengths λ = 470,546,589,650nm are R_g= 15.74%, 16.33%, 16.25%, 16.47% and R_m or R_p= 11.55%, 12.01%, 11.80%, 11.72%, respectively. Based on the experimental results and theoretical analysis,the authors inferred that the reflective optical orientations of YBa_2Cu_3O_(7-δ) crystal are R_p = a, R_m = b, R_g=c; the indexes of reflection colour of c axis, R_(vis)=16.3, λ_d = 611, P_e = 0.0567and those of a or b axis, R_(vis)= 11.95, λ_d = -502, P_e = 0.0609.

关 键 词：YBa2Cu3O7-δ晶体 反射率 反射光性方位 反射色 高温超导体 

分 类 号：TM26[一般工业技术—材料科学与工程] O734.2[电气工程—电工理论与新技术]