钽酸钾( KTaO3, 简称 KT)单晶具有稳定的立方结构，可用于制作激光调制器、数字式偏转器及半导体器件.由于该晶体从绝对零度至其熔点( 1645K) 温度范围内无相变，且其晶 胞参数与钇钡铜氧系超导体匹配甚好，有希望用作超导体薄膜的村底材料.
Contact UsDownloadPotassium tantalate (KTaO3, KT for short) single crystal has a stable cubic structure and can be used to make laser modulators, digital deflectors and semiconductor devices. Because the crystal has no phase change in the temperature range from absolute zero to its melting point (1645K) , And its unit cell parameters match very well with yttrium-barium-copper-oxygen superconductors, and it is promising to be used as a substrate material for superconductor films.
| Molecular formula | KTaO3 (KT) |
| Space group | m3m |
| Lattice constant | 0.3984nm |
| Melting point | 1352.2℃ |
| Density | 7.025 g/cm3 |
| Hardness (Mohs) | 6 |
| Growth method | Czochralski technology (VCZ) |
| Refractive index | 2.226@633nm, 2.152@1539nm |
| Coefficient of thermal expansion | 4.027*10-6/K) |
| specific heat capacity (room temperature JK-1g-1) | 0.378 |
| Transparent band (nm) | 380~4000 |
| Regular crystal orientation | <100>;<110>;<111> |
| Regular size | 20x20x0.5mm;10x10x0.5mm,5x5x0.5mm Can be customized according to customer needs, special direction and size of the substrate |
| Polishing | Single-sided or double-sided, Ra< 5A |
