Electron Density and Anharmonic Thermal Atomic Vibrations in Kj

Perovskite KTaO a belongs to the class of virtual ferroelectrics that possess ferroelectric properties under external influence (such as electric field, mechanical stress, etc.) or after inclusion of small amounts of impurities. Substitution of K ions by Li ions in crystalline KTaO a results in a phase transition. As the mechanism of such phase transitions… CONTINUE READING