Fabrication, Structure and Optical Properties of Zr4+ Doped Ba (Mg, Ta) O3 Transparent Ceramics with High Refractive Index

摘要

Novel transparent ceramics of Zr4+ doped Ba(Mg,Ta)O3 (BMT) with a high refractive index of 2.037 at 587.56 nm were successfully fabricated via high temperature solid-state-reaction sintering method.To make it transparent,the pure cubic Ba(Zr,Mg,Ta)O3 phases (BZMT) were realized in advance by skillfully modulating the lattice structure of BMT from trigonai symmetric to cubic symmetric through doping Zr4+ into the lattice of BMT crystal.Highly optical transmittance of 74％ at 650 nm,which hit the upper limit of the theory,was achieved for BZMT.Both abbe number of 23.4 and the bandgap Eg of 3.22 eV have been calculated.