Langasite
La3Ga5SiO14
|
Chemical name
Langasite |
|
Chemical formula
La3Ga5SiO14 |
|
Melting point [°C]
1470 |
|
Crystal system
hexagonal/ trigonal |
|
Space Group
P321 |
|
Unit cell
a [Å]:8,1783 b [Å]:8,1783 c [Å]:5,1014 |
|
Molecular weight [g/mol]
1017.41 |
|
Density [g/cm3]
5.748 |
|
Piezoelectric crystals
|
|
Q(m)
50 |
|
E-mech. CF (BAW) K^2(emc) [%]
15.8 |
|
Frequency spacing Δf [%]
0.9 |
|
Temp. freq. coefficient [*10^(-6) / °C]
1.6 |
|
SAW velocity V(ef) [m/s]
(0°, 140°, 22.5°) 2742 |
|
K^2(emc) (SAW) [%]
0.32 |
|
a(2) [10^(-8)/°C ^2]
-7.8 |
|
T(T0) (Temp. Coeff.) [°C]
25 |
|
M, degr. (Power Flow Angle)
52 |
|
Solubility in water
insoluble |
