Ferroelectric behavior of nonlinear optical material MnTeMoO6

Ferroelectricity was found in the nonlinear optical material MnTeMoO₆. A displacement of Mn³⁺ ions is demonstrated to be present and likely responsible for the ferroelectric behavior of MnTeMoO₆. The positive correlation between ferroelectric behavior and Mn³⁺ is exhibited. Ferroelectric behavior and Mn³⁺ ionic have been observed in MnTeMoO₆ pellets sintered at 500°C, and disappeared during the sintered temperature increase to 550°C or 600°C. Because the ionic radii of Mn³⁺ is smaller that Mn²⁺, thus locally induce electric dipoles, thereby leading to ferroelectric behavior. Utilizing its ferroelectric behavior, MnTeMoO₆ can be acted as security storage medium.