Transparent ceramics based on yttrium subgroup lanthanide, yttrium, and scandium oxides

Abstract

Transparent C-Y 2 O 3 -based ceramics characterized by optical transmission in visible and nearinfrared regions and translucent ceramics based on oxides of yttrium subgroup lanthanides are produced. Initial nanocrystalline powders are produced with heterophase mechanochemical treatment in an acid medium with doping cations. The effect from oxides of subgroup IVb (SiO 2 , PbO) elements, which promote liquid-phase sintering in the production of transparent ceramics, is established.

High‐entropy transparent ceramics: Review of potential candidates and recently studied cases

“…Most of the lanthanide sesquioxides, as well as yttrium oxide and scandium oxide, can be fabricated into transparent ceramics. Figure 18 provides some examples of transparent sesquioxide ceramics, including Y 2 O 3 , Sc 2 O 3 , Gd 2 O 3 , Tb 2 O 3 , Dy 2 O 3 , Ho 2 O 3 , Er 2 O 3 , Tm 2 O 3 , Yb 2 O 3 , and Lu 2 O 3 145,150–157 . These transparent sesquioxide ceramics can act as a host material and can be doped with many luminescent ions, such as Nd 3+ , Tb 3+ , Dy 3+ , Ho 3+ , Er 3+ , Tm 3+ , and Yb 3+ , for applications like solid‐state lasers, 20,158,159 scintillators, 160,161 magneto‐optical materials, 145,153 infrared detectors, optical imaging systems, 152 temperature sensors, 162 and so forth.…”

“…(G) Gd 2 O 3 155 . (H) and (I) Some other transparent sesquioxide ceramics 157,167 . Reproduced with permission…”

“…The major differences in the fabrication of transparent garnet and sesquioxide ceramics are the 155 (H) and (I) Some other transparent sesquioxide ceramics. 157,167 Reproduced with permission sintering temperatures and sintering additives. Hot pressing with LiF as an additive, 145,146 vacuum sintering with La 2 O 3 and/or ZrO 2 as additives, [146][147][148] and a combination of air/oxygen sintering with HIP are the most common methods for fabricating transparent sesquioxide ceramics.…”

“…149 Most of the lanthanide sesquioxides, as well as yttrium oxide and scandium oxide, can be fabricated into transparent ceramics. 145,[150][151][152][153][154][155][156][157] These transparent sesquioxide ceramics can act as a host material and can be doped with many luminescent ions, such as Nd 3+ , Tb 3+ , Dy 3+ , Ho 3+ , Er 3+ , Tm 3+ , and Yb 3+ , for applications like solid-state lasers, 20,158,159 scintillators, 160,161 magnetooptical materials, 145,153 infrared detectors, optical imaging systems, 152 temperature sensors, 162 and so forth. Figure 18 also shows how solid solution and doping could be realized with almost any composition, leading to flexibility in designing transparent sesquioxide ceramics.…”

The influence of HfO2 additives on the optical properties of Nd3+‐doped Y2O3 ceramics

“…1 Introduction Doping of yttria ceramics with HfO 2 additives leads to disordering of crystal structure and changing of optical properties of material [1,2]. For instance, pore-free yttria ceramics were obtained at the concentration of HfO 2 2,6 mol.%.…”