New Piezoelectric MaterialsLanthanum Gallium Silicate Know as Langasite Crystal

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Lanthanum Gallium Silicate ( La2Ga5SiO14 ) Also Know as Langasite or LGS Crystal

Lanthanum gallium silicate ( La2Ga5SiO14 ) is a phenomenal invention. Though langasite was initially developed as a laser crystal, it revealed a remarkable combination of piezoelectric qualities, which opened up new opportunities to use the LGS crystal in radio frequency devices. The main applications of langasite crystals now is SAW filters and SAW resonators. Experts agree that LGS is the best choice for high-efficiency broad band frequency devices because it possesses exceptional frequency-temperature characteristics, a very high index of electromechanical coupling and un unparalleled Q-factor.


Main Properties:

Crystal Structurerigonal system, group 33 a= 8.1783 c = 5.1014
Growth MethodCzochralski
Hardness6.6 Moh's
Density5.754 g/cm3
Melt Point1470 o C ( phase transition point: N/A)
Thermal expansion (x10-6/ oC)α 11: 5.10 α 33: 3.61
Acoustic velocity, SAW2400 ( m/sec )
Frequency constant, BAW1380 ( kHz/mm )
Piezoelectric couplingK2 (%) BAW: 2.21 SAW: 0.3
InclusionsN0


China New Piezoelectric MaterialsLanthanum Gallium Silicate Know as Langasite Crystal supplier

New Piezoelectric MaterialsLanthanum Gallium Silicate Know as Langasite Crystal

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