Fabrication and optical properties of transparent fine-grained Zn1.1Ga1.8Ge0.1O4 and Ni2+ (or Cr3+)-doped Zn1.1Ga1.8Ge0.1O4 spinel ceramics

Sintering of Lixiviated Nano Glass-Ceramics: An Original Route to Elaborate Transparent Ceramics

“…This contamination has already been oberved in ZnGa2O4 samples and others transparent materials sintered by SPS [15,54,55]. In some cases, after this SPS step, a post annealing treatment in air was performed to remove carbon contamination [14,56]. The transmission window extends from 0.…”

“…Transparent ceramics have raised significant attention during the last decades due to their promising and remarkable combination of optical, mechanical, dielectric and thermal properties [1][2][3][4][5][6][7]. Transparent crystalline materials can be obtained through different synthesis routes using i) the Czochralski, Verneuil or flux growing methods for example to get high quality single crystals [8][9][10], ii) the sintering of nano-powders by vacuum sintering [11], hot uniaxial or isostatic pressing (HP/HIP) [12,13] and iii) non-conventional sintering techniques like the Spark Plasma Sintering (SPS) [14,15].…”