@article{ZHANG2020, 
author = {Lei ZHANG and Jun YANG and Hongyu YU and Wei PAN},
title = {High performance of La-doped Y2O3 transparent ceramics},
year = {2020},
journal = {Journal of Advanced Ceramics},
volume = {9},
number = {4},
pages = {493-502},
keywords = {Y2O3 transparent ceramics, optical transmittance, sintering kinetics, mechanical properties, thermal properties},
url = {https://www.sciopen.com/article/10.1007/s40145-020-0392-7},
doi = {10.1007/s40145-020-0392-7},
abstract = {As an optical material, Y2O3 transparent ceramics are desirable for application as laser host materials. However, it is difficult to sinter and dense of Y2O3 hinders the preparation of high-quality optical ceramics via traditional processes. In this work, we use La2O3 as a sintering aid for fabricating high-transparency Y2O3 ceramics using a vacuum sintering process. It is demonstrated that the in-line optical transmittance of 15.0 at% La-doped Y2O3 at a wavelength of 1100 nm achieves a transmittance of 81.2%. A sintering kinetics analysis reveals that a grain-boundary-diffusion-controlled mechanism dominates the faster densification at high La3+ concentrations. It is also shown that both the mechanical and thermal properties of Y2O3 transparent ceramics are significantly improved upon the increase of La2O3 sintering additives. The results indicate that a La-doped Y2O3 transparent ceramic is a promising candidate for a laser host material.}
}