Yttrium aluminate - inorganic compound, yttrium oxide and aluminum with the formula YAlO 3 (Y 2 O 3 • Al 2 O 3 ), colorless crystals, does not dissolve in water.
| Yttrium aluminate | |
|---|---|
| Are common | |
| Systematic name | Yttrium aluminate |
| Traditional names | Yttrium orthoaluminate |
| Chem. formula | YAlO 3 |
| Physical properties | |
| condition | colorless crystals |
| Molar mass | 163.89 g / mol |
| Density | 5.35 g / cm³ |
| Hardness | 8.5 |
| Thermal properties | |
| T. melt. | 1870; 2150 ° C |
| Optical properties | |
| Refractive index | 1.97 |
| Classification | |
| Reg. CAS number | |
| Pubchem | |
| Reg. EINECS number | |
| SMILES | |
| Inchi | |
| Chemspider | |
Content
Getting
- Annealing a mixture of oxides of yttrium and aluminum :
- {\ displaystyle {\ mathsf {Y_ {2} O_ {3} + Al_ {2} O_ {3} \ {\ xrightarrow {1800 ^ {o} C}} \ 2YAlO_ {3}}}
Physical Properties
Yttrium aluminate forms yellow crystals of the rhombic syngony , space group P nma , cell parameters a = 0.5330 nm, b = 0.7375 nm, c = 0.5180 nm, Z = 4, (there are data on other cells: monoclinic syngony , space group P 2 1 / m , cell parameters a = 0.736 nm, b = 0.736 nm, c = 0.736 nm, β = 90 °, Z = 8 and cubic syngony , space group P m3m , cell parameters a = 0.368 nm, Z = 1)
Application
- The working body of solid-state lasers.
- Scintillators.
Literature
- Chemical Encyclopedia / Redkol .: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1988. - T. 1. - 623 p.