New ferroelectric compound SrTeO3

A synthetic compound SrTeO₃ was discovered to exhibit ferroelectricity in the temperature range between 312 and 485°C. Small single crystals could be grown by the Kyropoulos method. The crystal belongs to the monoclinic system and its space group is ${\text{C2/ c − C}}_{\text{2 h}}^6$ at room temperature. A pronounced dielectric anomaly was observed along the b axis at 485°C. The value of the spontaneous polarization, obtained by the D‐E hysteresis loops at 50 Hz, is 3.7 μC/cm² at 312°C.