From HandWiki - Reading time: 5 min
Bi12TiO20 crystal[1]
| |
Bi12TiO20 crystal structure[2]
| |
| Names | |
|---|---|
| Other names
Bismuth titanium oxide, dodecabismuth titanate[3]
| |
| Identifiers | |
3D model (JSmol)
|
|
| ChemSpider | |
PubChem CID
|
|
| |
| |
| Properties | |
| Bi12TiO20 | |
| Molar mass | 2875.62 |
| Odor | odorless |
| Density | 9.03 g/cm3[2] |
| Melting point | 875 °C (1,607 °F; 1,148 K) Decomposes to Bi4Ti3O12 and Bi2O3[4] |
| insoluble | |
| Structure | |
| body-centered cubic, cI66[4][2] | |
| I23, No. 197 | |
| Related compounds | |
Other cations
|
Bismuth silicon oxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Bi4Ti3O12 crystal structure[5]
| |
| Names | |
|---|---|
| Other names
Bismuth titanium oxide
| |
| Identifiers | |
3D model (JSmol)
|
|
| ChemSpider | |
| EC Number |
|
PubChem CID
|
|
| |
| |
| Properties | |
| Bi4Ti3O12 | |
| Molar mass | 1171.5 |
| Odor | odorless |
| Density | 7.95 g/cm3[5] |
| insoluble | |
| Band gap | 3.5 eV |
| Structure | |
| Orthorhombic, oS76[5] | |
| Aba2, No. 41 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
| Identifiers | |
|---|---|
3D model (JSmol)
|
|
| ChemSpider | |
| EC Number |
|
PubChem CID
|
|
| |
| |
| Properties | |
| Bi2O7Ti2 | |
| Molar mass | 625.688 g·mol−1 |
| Odor | odorless |
| insoluble | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Bismuth titanate or bismuth titanium oxide is a solid inorganic compound of bismuth, titanium and oxygen with the chemical formula of Bi12TiO20, Bi 4Ti3O12 or Bi2Ti2O7.
Bismuth titanate ceramics can be produced by heating a mixture of bismuth and titanium oxides. Bi12TiO20 forms at 730–850 °C, and melts when the temperature is raised above 875 °C, decomposing in the melt to Bi4Ti3O12 and Bi2O3.[4] Millimeter-sized single crystals of Bi12TiO20 can be grown by the Czochralski process, from the molten phase at 880–900 °C.[1]
Bismuth titanates exhibit electrooptical effect and photorefractive effect, that is, a reversible change in the refractive index under applied electric field or illumination, respectively. Consequently, they have potential applications in reversible recording media for real-time holography or image processing applications.[4][1]