Lithium tantalate (data page)

This page provides supplementary chemical data on lithium tantalate.

Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as SIRI, and follow its directions.

Structure and properties

Structure and properties
Index of refraction, nD ?
Abbe number ?
Dielectric constant, ε11 51 ε0 (measured at constant stress)
Dielectric constant, ε33 45 ε0 (measured at constant stress)
Dielectric constant, ε11 38.3 ε0 (measured at constant strain)
Dielectric constant, ε33 46.2 ε0 (measured at constant strain)
Piezoelectric constant, d15 26 pC/N
Piezoelectric constant, d22 7 pC/N
Piezoelectric constant, d31 -2 pC/N
Piezoelectric constant, d33 8 pC/N
Bond strength ?
Bond length ?
Bond angle ?
Magnetic susceptibility ?

Thermodynamic properties

Phase behavior
Triple point ? K (? °C), ? Pa
Critical point ? K (? °C), ? Pa
Thermal Expansion 2x10−6 K−1 (z), 16x10−6 K−1 (x,y)
Curie temperature ~950 K (~1220 °C)
Std enthalpy change
of fusion, ΔfusHo		 ? kJ/mol
Std entropy change
of fusion, ΔfusSo		 ? J/(mol·K)
Std enthalpy change
of vaporization, ΔvapHo		 ? kJ/mol
Std entropy change
of vaporization, ΔvapSo		 ? J/(mol·K)
Solid properties
Std enthalpy change
of formation, ΔfHosolid		 ? kJ/mol
Standard molar entropy,
Sosolid		 ? J/(mol K)
Heat capacity, cp ? J/(mol K)
Liquid properties
Std enthalpy change
of formation, ΔfHoliquid		 ? kJ/mol
Standard molar entropy,
Soliquid		 ? J/(mol K)
Heat capacity, cp ? J/(mol K)
Gas properties
Std enthalpy change
of formation, ΔfHogas		 ? kJ/mol
Standard molar entropy,
Sogas		 ? J/(mol K)
Heat capacity, cp ? J/(mol K)

Spectral data

UV-Vis
λmax ? nm
Extinction coefficient, ε ?
IR
Major absorption bands ? cm−1
NMR
Proton NMR  
Carbon-13 NMR  
Other NMR data  
MS
Masses of
main fragments		  

References

Except where noted otherwise, data relate to standard ambient temperature and pressure.

Wang Yue and Jiang Yi-jian, “Crystal orientation dependence of piezoelectric properties in LiNbO3 and LiTaO3,” Optical Materials, 2003. 23 (1-2): pg. 403-408

Smith, R. T., "Elastic, Piezoelectric, and Dielectric Properties of Lithium Tantalate," Applied Physics Letters, 1967. 11, (5): pg. 146-148

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