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Bismuth titanate

From Wikipedia, the free encyclopedia
Bi12TiO20
Bi12TiO20 crystal[1]
Bi12TiO20 crystal structure[2]
Names
Other names
Bismuth titanium oxide, dodecabismuth titanate[3]
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/12Bi.20O.Ti
    Key: LIHXTGNDEGWZNF-UHFFFAOYSA-N
  • O=[Ti]=O.O=[Bi]O[Bi]=O.O=[Bi]O[Bi]=O.O=[Bi]O[Bi]=O.O=[Bi]O[Bi]=O.O=[Bi]O[Bi]=O.O=[Bi]O[Bi]=O
Properties
Bi12TiO20
Molar mass2875.62
Odorodorless
Density9.03 g/cm3[2]
Melting point875 °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
Othercations
Bismuth silicon oxide
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa).
Chemical compound
Bi4Ti3O12
Bi4Ti3O12 crystal structure[5]
Names
Other names
Bismuth titanium oxide
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 234-564-6
  • InChI=1S/4Bi.12O.3Ti/q4*+3;12*-2;3*+4
    Key: LEVGIWAPKXUVTE-UHFFFAOYSA-N
  • [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Ti+4].[Ti+4].[Bi+3].[Bi+3].[Bi+3].[Bi+3]
Properties
Bi4Ti3O12
Molar mass1171.5
Odorodorless
Density7.95 g/cm3[5]
insoluble
Band gap3.5 eV
Structure
Orthorhombic,oS76[5]
Aba2, No. 41
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa).
Chemical compound
Bi2Ti2O7
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 234-986-0
  • InChI=1S/2Bi.7O.2Ti/q2*+3;7*-2;2*+4
    Key: VDESGIACEFVDCZ-UHFFFAOYSA-N
  • [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Ti+4].[Bi+3].[Bi+3]
Properties
Bi2O7Ti2
Molar mass625.688 g·mol−1
Odorodorless
insoluble
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa).
Chemical compound

Bismuth titanate orbismuth titanium oxide is a solid inorganic compound ofbismuth,titanium andoxygen with thechemical formula of Bi12TiO20,Bi4Ti3O12 or Bi2Ti2O7.

Synthesis

[edit]

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 theCzochralski process, from the molten phase at 880–900 °C.[1]

Properties and applications

[edit]

Bismuth titanates exhibitelectrooptical effect andphotorefractive effect, that is, a reversible change in therefractive index under applied electric field or illumination, respectively. Consequently, they have potential applications in reversible recording media for real-timeholography or image processing applications.[4][1]

See also

[edit]

References

[edit]
Wikimedia Commons has media related toBismuth titanate.
  1. ^abcShen, Chuanying; Zhang, Huaijin; Zhang, Yuanyuan; Xu, Honghao; Yu, Haohai; Wang, Jiyang; Zhang, Shujun (2014)."Orientation and Temperature Dependence of Piezoelectric Properties for Sillenite-Type Bi12TiO20 and Bi12SiO20 Single Crystals".Crystals.4 (2): 141.Bibcode:2014Cryst...4..141S.doi:10.3390/cryst4020141.
  2. ^abcEfendiev, Sh. M.; Kulieva, T. Z.; Lomonov, V. A.; Chiragov, M. I.; Grandolfo, M.; Vecchia, P. (1982). "Crystal Structure of Bismuth Titanium Oxide Bi12TiO20".Physica Status Solidi A.74 (1):K17 –K21.Bibcode:1982PSSAR..74...17E.doi:10.1002/pssa.2210740148.
  3. ^Yaws, Carl L. (2015).The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals: Physical Properties for More Than 54,000 Organic and Inorganic Chemical Compounds, Coverage for C1 to C100 Organics and Ac to Zr Inorganics. Elsevier Science. p. 698.ISBN 978-0-12-801146-1.
  4. ^abcdSantos, D. J.; Barbosa, L. B.; Silva, R. S.; MacEdo, Z. S. (2013)."Fabrication and Electrical Characterization of Translucent Bi12TiO20 Ceramics".Advances in Condensed Matter Physics.2013:1–7.doi:10.1155/2013/536754.
  5. ^abcVan Uitert, L. G.; Egerton, L. (1961). "Bismuth Titanate. A Ferroelectric".Journal of Applied Physics.32 (5): 959.Bibcode:1961JAP....32..959V.doi:10.1063/1.1736142.
Bismuth(III)
Organobismuth(III)
Bismuth(V)
Organobismuth(V)
Titanium(II)
Organotitanium(II) compounds
Titanium(III)
Organotitanium(III) compounds
Titanium(IV)
(Oxo)Titanates
Fluorotitanates
Alkoxides, carboxylates,amides
Organotitanium(IV) compounds
Titanate salts
H4TiO4He
Li2TiO3
Li4Ti5O12		BeBCNOFNe
Na2TiO3MgAlSiPSClAr
KCaTiO3ScTiVCrMnTiO3FeCoNiTiO3CuZnTiO3
Zn2TiO4
Zn2Ti3O8		GaGeAsSeBrKr
RbSrTiO3YZrNbMoTcRuRhPdAgCdInSnSbTeIXe
Cs2TiO3BaTiO3
Ba2TiO4		*LuHfTaWReOsIrPtAuHgTlPbTiO3Bi12TiO20
Bi4Ti3O12
Bi2Ti2O7		PoAtRn
FrRa**LrRfDbSgBhHsMtDsRgCnNhFlMcLvTsOg
 
*LaCePrNdPmSmEuTiO3GdTbDy2Ti2O7Ho2Ti2O7ErTmYb
**AcThPaUNpPuAmCmBkCfEsFmMdNo
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