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perovskite
Sign in to savePerovskite (pronunciation: ) is an orthorhombic calcium titanium oxide mineral composed of calcium titanate (chemical formula ). Its name is also applied to the class of compounds which have the same type of crystal structure as , known as the perovskite structure, which has a general chemical formula for chalcogen (group 16) perovskites, or for the halogen (group 17) perovskites (the kind typically found in modern photovoltaics like photodiodes and solar panels). Many different cations can be embedded in this structure, allowing the development of diverse engineered materials.
Key facts
- Mineral.name
- Perovskite
- Mineral.category
- Oxide minerals
- Mineral.image
- Perovskite-155026.jpg
- Mineral.caption
- Crystals of perovskite on matrixSize:
- Mineral.IMAsymbol
- Prv
- Mineral.molweight
- 135.96 g/mol
- Mineral.strunz
- 4.CC.30
- Mineral.system
- Orthorhombic
- Mineral.class
- Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
- Mineral.symmetry
- Pbnm
- Mineral.color
- Black, reddish brown, pale yellow, yellowish orange
- Mineral.habit
- Pseudo cubic – crystals show a cubic outline
- Mineral.cleavage
- [100] good, [010] good, [001] good
- Mineral.twinning
- complex penetration twins
- Mineral.fracture
- Conchoidal
- Mineral.mohs
- 5.0–5.5
- Mineral.luster
- Adamantine to metallic; may be dull
- Mineral.refractive
- nα = 2.3, nβ = 2.34, nγ = 2.38
via Wikipedia infobox
Article
17 sectionsContents
- History
- Occurrence
- In stars and brown dwarfs
- Physical properties
- Perovskite derivatives
- Double perovskites
- Crystallographic principles and ordering mechanisms
- Common distortion modes and Glazer tilt patterns
- Electronic and magnetic structure trends
- Defect chemistry and antisite disorder
- Representative functional materials
- Lower dimensional perovskites
- Lead-free halide perovskites
- Chiral perovskites
- See also
- References
- External links
Perovskite (pronunciation: ) is an orthorhombic calcium titanium oxide mineral composed of calcium titanate (chemical formula ). Its name is also applied to the class of compounds which have the same type of crystal structure as , known as the perovskite structure, which has a general chemical formula for chalcogen (group 16) perovskites, or for the halogen (group 17) perovskites (the kind typically found in modern photovoltaics like photodiodes and solar panels). Many different cations can be embedded in this structure, allowing the development of diverse engineered materials.
== History == The mineral was discovered in the Ural Mountains of Russia by Gustav Rose in 1839 and is named after Russian mineralogist Lev Perovski (1792–1856). Perovskite's notable crystal structure was first described by Victor Goldschmidt in 1926 in his work on tolerance factors. The crystal structure was later published in 1945 from X-ray diffraction data on barium titanate by Helen Dick Megaw.