论文部分内容阅读
用最小偏向角法在 2 0℃下精确测量了 0 6 2Pb(Mg1 3Nb2 3)O3 0 38PbTiO3( 0 6 2PMN 0 38PT)单晶的折射率 ,给出了该温度下折射率色散的Sellmeier方程 .研究了能带结构与折射率的关系 ,计算了样品的Sellmeier光学系数 :对no,E0 =5 5 0eV ,λ0 =0 2 2 6 μm ,S0 =1 0 0 4× 10 1 4m- 2 ,Ed =2 8 10eV ;对ne,E0 =5 5 7eV ,λ0 =0 2 2 3μm ,S0 =1 0 17×10 1 4m- 2 ,Ed=2 8 10eV .ABO3型钙钛矿材料中 ,BO6 八面体基元决定了晶体的能带结构 ,对折射率产生重要影响
The refractive index of a single crystal of 0 6 2Pb (Mg1 3Nb2 3) O3 0 38PbTiO3 (0 6 2PMN 0 38PT) was precisely measured by the least deflection method at 20 ° C, and the Sellmeier equation of refractive index dispersion at this temperature was given. The relationship between the band structure and the refractive index was studied and the Sellmeier optical coefficients of the samples were calculated. For No, E0 = 550eV, λ0 = 0226μm, S0 = 1 0 0 4 × 1014m-2, Ed = 2 8 10eV; for ne, E0 = 577eV, λ0 = 0 2 2 3μm, S0 = 1 0 17 × 10 1 4m-2, Ed = 2 8 10eV. In the BO3 type perovskite material, the BO6 octahedron Primitives determine the crystal’s band structure and have a significant effect on the refractive index