 |
|
SrTiO3 |
LaAlO3 |
MgO |
Al2O3 |
ZrO2 |
|
Crystalline system |
Cubic System |
Pseudo-Cubic Perovskite Pm3m |
Cubic Fm3m |
Hexagonal |
Cubic |
Lattice constant |
a-3.905A |
a=3.790A |
a-4.13A |
a=4.748A |
a=5.147A |
Melting point |
2080°C |
2100°C |
2800°C |
2040°C |
2700°C |
Density |
5.122g/cm3 |
6.50g/cm3 |
3.58/cm3 |
3.98g/cm3 |
6.0g/cm3 |
Specific heat |
0.13cal/g°C |
0.21cal/g°C (RT) |
|||
Standard size (mm3) |
10x10x0.5 15x15x1 | 10x10x0.5 25x25x1 | 10x10x0.5 |
10x10x0.5 25x25x1 | 10x10x0.5 |
Mohs hardness |
6-6.5 |
6-6.5 |
5.5 |
9 |
8-8.5 |
Thermal expansion coefficient |
9.4 x 10-6/°C |
9.4 x 10-6/°C |
11.2 x 10-6/°C |
5.8 x 10-6/°C |
|
Dielectric constant |
er = 5.20 |
er= 21 (RT-77K, 10GHz) |
e= 9.65 (1 x 102 - 1 x 108 Hz) |