弛豫型铁电晶体0.92PZN-0.08PT的光吸收特性  

Properties of Optical Absorption in Relaxor Ferroelectric Crystal 0.92PZN-0.08PT

作　　者：肖敬忠[1] 杭寅[1] 王爱华[1] 殷绍唐[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所,合肥市230031

出　　处：《光谱实验室》2002年第1期28-30,共3页Chinese Journal of Spectroscopy Laboratory

摘　　要：本文研究了 0 .92 PZN- 0 .0 8PT晶体的紫外 -可见 -近红外透过光谱 ,确定了它的吸收边波长为 380 nm,计算出该晶体在此波段的吸收系数 ,拟出了吸收系数与光子能量的关系曲线 ;The UV near IR spectrum of relaxor ferroelectric crystal 0.92PZN 0.08PT was investigated by carry 5 model spectrometer.The absorption edge was about 380nm,the absorption coefficients were calculated,and the curves of absorption coefficients(α) via energy(hν) were obtained respectively.Through the curve α 1/2 h ν,it is indicated that the electron transition from valence band to conduction band is the indirect band gap transition, in which the phonons absorb or emit energies.

关 键 词：弛豫型铁电晶体 光吸收特性 紫外-可见-近红外透过光谱 间接带隙跃迁 0.92PZN-0.08PT晶体 

分 类 号：TM221[一般工业技术—材料科学与工程]