Perovskite is essentially calcium titanate (CaTiO3). You can find the way in which atoms arrange themselves within a perovskite, by going to images.google.com and typing "crystal structure + perovskite". Notice how the atoms sit with respect to one another. The way atoms sit with respect to one another determines the "crystal structure" of a crystalline substance.Perovskite based materials (which means those materials that have similar crystal structure, but different atomic composition) have been used extensively in electronic devices due to their ability to store charges. This is because they tend to be superb insulators, with high dielectric constants (dielectric constant is a measure of response of a material to an applied electric field). We are interested in using materials related to the perovskite, to make novel optical materials, with a very interesting set of optical properties.

You will need to visit this page again, 5 months from now, if you wish to know what these novel properties are!