perovskita perovskite calcium titanium oxide mineral ABX 3 pseudocubic crystallize orthorhombic system

A perovskite structure is any material with the same type of crystal structure as calcium titanium oxide (CaTiO3), known as the perovskite structure, or XIIA2+VIB4+X2−3. Perovskites take their name from this compound, which was first discovered in the Ural mountains of Russia by Gustav Rose in 1839 and is named after Russian mineralogist L. A. Perovski (1792–1856). The general chemical formula for perovskite compounds is ABX3, where ‘A’ and ‘B’ are two cations of very different sizes, and X is an anion that bonds to both. The ‘A’ atoms are larger than the ‘B’ atoms. The ideal cubic-symmetry structure has the B cation in 6-fold coordination, surrounded by an octahedron of anions, and the A cation in 12-fold cuboctahedral coordination.

La estructura tipo perovskita se da en cualquier material con el mismo tipo de estructura que el óxido de calcio y titanio (CaTiO3). Toma el nomre del mineral perovskita descubierto por Gustav Rose en 1839 en los urales y llamado así por el mineralólogo ruso . A. Perovski (1792–1856). La fórmula general para este tipo de compuestos es ABX3, donde A y B son dos cationes de diferentes tamaños y x es un anión que se coordina con los dos- LA estructura ideal es una simetría cúbica tiene el catión b (titanio) con una cordinación hexavalente y rodeado por un octaedro de aniones y el cation A con coordinación cubooctahédrica de simetría 12.

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