Structural, charge density and bond length variations in c-Y₂O₃influenced by progressive cerium additions

Abstract

Cerium occupancy induces expansion of the cubic Y2O3 unit cell and yields a dense microstructure alongside enhanced mechanical properties.

Designing highly transparent cerium doped Y 2O 3 ceramics with high mechanical and thermal properties for UV-shielding in extreme conditions

“…Ce 4+ plays a major role in band gap narrowing in Y2O3 transparent ceramics. However, despite the addition of more Ce, the lattice structure of Y2O3 can accommodate a limited amount of Ce 4+ , and most of the Ce is transformed to Ce 3+ , so the increase in the amount of Ce 4+ is not significant (as evidenced in XPS data, Figure 1e), resulting in insignificant changes in the band gap [41]. This suggests that CeO2 doping represents an effective method for customizing the optical bandgap of yttria, particularly for applications requiring UV-shielding windows.…”

On-Line pH Measurement Cation Exchange Kinetics of Y3+-Exchanged Alginic Acid for Y2O3 Nanoparticles Synthesis

“…Yttrium oxide (Y 2 O 3 ), whether pure or doped with other cations, displays interesting chemical and physical properties and, thus, can contribute to various applications such as strengthened steels [ 10 , 11 ], gas sensors [ 12 , 13 ], catalyst [ 14 , 15 ], electrodeposition [ 16 ], and transparent ceramics [ 17 , 18 ]. Different methods, such as plasma electrochemistry [ 19 ], hydrothermal [ 15 ], combustion [ 10 , 20 ], co-precipitation [ 21 ], or citrate-assisted sol-gel technique [ 22 ], have been reported for synthesizing Y 2 O 3 nanoparticles. Ensuring rapid, cost-effective, and energy-efficient synthesis of Y 2 O 3 nanoparticles with ease of scalability has been important from a commercial perspective.…”