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materials.

rechargeable batteries *etc.*

**6. Acknowledgment** 

**7. References** 


**5** 

*Spain* 

Antonio Diego Lozano-Gorrín

*Universidad de La Laguna* 

**Structural Characterization of New Perovskites** 

The perovskite is a calcium titanium oxide mineral species composed of calcium titanate, with the chemical formula CaTiO3. The mineral was discovered in the Ural mountains (Russia) by Gustav Rose in 1839 and is named after Russian mineralogist L. A. Perovski

The perovskite crystal structure was published in 1945 from X-ray diffraction data on barium titanate by the Irish crystallographer H. D. Megaw (1907-2002). It is a true engineering ceramic material with a plethora of applications spanning energy production

The general stoichiometry of the perovskite structure is *AB*X3, where *A* and *B* are cations and X is an anion. The *A* and *B* cations can have a variety of charges and in the original perovskite mineral (CaTiO3) the *A* cation is divalent and the *B* cation is tetravalent. CaTiO3

The traditional view of the perovskite lattice is that it consists of small *B* cations within

Figure 1 shows a picture of the mineral perovskite which, as it was mentioned above, is

oxygen octahedra, and larger *A* cations which are XII fold coordinated by oxygen.

(SOFC technology), environmental containment and communications.

exhibits an orthorhombic structure with space group Pnma.

**1. Introduction** 

composed by calcium titanate.

Fig. 1. Perovskite mineral species (CaTiO3).

(1792-1856).

