Effect of Composition on the Structure and Properties of MgO/Y2O3 Composite Ceramics

Permin, Dmitry; Belyaev, Alexander; Балабанов, С. С.; Koshkin, V. A.; Болдин, М. С.; Novikova, A. V.; Тимофеев, О. В.; Gashpar, Zh. K.; Ладенков, И. В.

doi:10.1134/s0020168522060085

Cited by 5 publications

(2 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The composite ceramics of rare earth (RE) sesquioxides with magnesia were fabricated via hot pressing of nanopowders obtained using the method of self-propagating high-temperature synthesis (SHS). This approach has been shown to be effective in the fabrication of Y 2 O 3 -MgO [ 11 ] and Gd 2 O 3 -MgO [ 23 ] composites earlier.…”

Section: Methodsmentioning

confidence: 99%

“…Recently, it has been shown that it is possible to obtain two-phase Y 2 O 3 -MgO [ 4 , 5 , 6 , 7 ] and Gd 2 O 3 -MgO [ 8 , 9 , 10 ] ceramics with transmission in the wavelength range of 1.5–8 μm at the level of single crystals of rare earth sesquioxides by reducing the grain size to at least a tenth of a wavelength, e.g., 100–200 nm. Such nanocomposites have advantages over sesquioxides in both mechanical properties and thermal conductivity [ 11 , 12 ]. These properties are important for active media, and it is attractive to use composites as a matrix for doping with ions whose luminescence bands fall within the corresponding transparency range.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Erbium-Doped Lu2O3-MgO and Sc2O3-MgO IR-Transparent Composite Ceramics

et al. 2023

View full text Add to dashboard Cite

Novel IR-transparent ceramics of erbium-doped Lu2O3-MgO and Sc2O3-MgO composites have been successfully obtained using a combination of glycine–nitrate self-propagating high-temperature synthesis and vacuum hot-pressing methods. Composites have densities greater than 99.5% of those calculated by X-ray diffraction and consist of uniformly distributed submicron grains of magnesium and rare earth oxides. The transmittances of 1.5 mm thick composites are as high as 84.5% and 78.9% at ~5 µm for Er:Lu2O3-MgO and Er:Sc2O3-MgO, respectively. Both composites are favorable matrices for doping with erbium ions, which exhibit intense luminescence in the visible, near, and mid-IR under relevant excitation. The position of the luminescence bands is similar to Er:Lu2O3 and Er:Sc2O3 ceramics; the lifetimes of the 4I13/2 state are 8.85 ± 0.1 ms and 5.7 ± 0.2 ms for 3%Er:Lu2O3-MgO and 3%Er:Sc2O3-MgO, respectively.

show abstract

Section: Methodsmentioning

confidence: 99%