Strontium titanate is an oxide of strontium and titanium with the chemical formula SrTiO3. At room temperature, it is a centrosymmetric paraelectric material with a perovskite structure. At low temperatures it approaches a ferroelectric phase transition with a very large dielectric constant ~104 but remains paraelectric down to the lowest temperatures measured as a result of quantum fluctuations, making it a quantum paraelectric. It was long thought to be a wholly artificial material, until 1982 when its natural counterpart—discovered in Siberia and named tausonite—was recognised by the IMA. Tausonite remains an extremely rare mineral in nature, occurring as very tiny crystals. Its most important application has been in its synthesized form wherein it is occasionally encountered as a diamond simulant, in precision optics, in varistors, and in advanced ceramics.
The name tausonite was given in honour of Lev Vladimirovich Tauson (1917–1989), a Russian geochemist. Disused trade names for the synthetic product include strontium mesotitanate, Fabulite, Diagem, and Marvelite. Other than its type locality of the Murun Massif in the Sakha Republic, natural tausonite is also found in Cerro Sarambi, Concepción department, Paraguay; and along the Kotaki River of Honshū, Japan.
Read more about Strontium Titanate: Properties, Synthesis, Use As A Diamond Simulant, Use in Radioisotope Thermoelectric Generators
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... Because strontium titanate and glass are too soft to survive use as a ring stone, they have been used in the construction of composite or doublet ... the bottom portion (pavilion) of the stone, and in the case of strontium titanate, a much harder material—usually colorless synthetic spinel or sapphire—is used for the top half (crown) ... In strontium titanate and diamond-based doublets, an epoxy is used to adhere the two halves together ...
... A possible sensor assembly consists of barium strontium titanate bump-bonded by polyimide thermally insulated connection ... change material) amorphous silicon lead zirconate titanate (PZT) lanthanum doped lead zirconate titanate (PLZT) lead scandium tantalate (PST) lead lanthanum titanate (PLT) lead ...
... into the synthesis of another titanium compound, strontium titanate (SrTiO3, pure tausonite), was conducted ... Upon its commercial introduction in 1955, strontium titanate quickly replaced synthetic rutile as the most popular diamond simulant ... This was due not only to strontium titanate's novelty, but to its superior optics its RI (2.41) is very close to that of diamond, while its dispersion (0.19), although also very high, was a significant ...
... Due to its high melting point and insolubility, strontium titanate was used as a strontium-90 containing material in the US Sentinel series of Radioisotope thermoelectric generators ...