Perovskite mineral,molecular model. Perovskite is a mineral form of calcium titanate,with the chemical formula Ca.Ti.O3. The structure shown here is the unit cell,with cations (positive ions) and anions (negative ions). The ions are colour-coded: calcium (blue,2+ cation),titanium (pink,4+ cation),oxygen (yellow,2- anion). The pseudocubic crystals crystallize in the orthorhombic system. Physical properties include superconductivity,magneto-resistance,ionic conductivity,and dielectric properties. This makes perovskite of great importance in microelectronics and telecommunications |