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Langatate

La3Ga5.5Ta0.5O14

Langatate - La3Ga5.5Ta0.5O14
Chemical name
Langatate
Chemical formula
La3Ga5.5Ta0.5O14
Melting point [°C]
1450
Crystal system
hexagonal/ trigonal
Space Group
P321
Mohs hardness
6.5
Density [g/cm3]
6.31
Piezoelectric crystals
 
Q(m)
50
K (rel. dielectr. const.) = ε(T33)/ε(0)
80.3
Piezoelectric charge constant
-d(11)=6.5; d(14)=4.7
Piezoelectric voltage constant
-g(11)=38; g(14)=27.7
Young's modulus
Y^E(11)=11; Y^E(33)=19
Frequency constants; L=longit. mode, T=thickn. mode
N(L)=2870; N(T)=1320
Elastic compliance [10^(-12) m^2/N]
S^E(11)=9.0; S^E(33)=5.2
Crystal growth method
Czochralski
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