Lithium tantalate (data page)
This page provides supplementary chemical data on lithium tantalate.
Material Safety Data Sheet[edit]
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[edit]
| 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[edit]
| 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 (~680 °C) (~1220 °F) |
| Std enthalpy change of fusion, ΔfusH |
? kJ/mol |
| Std entropy change of fusion, ΔfusS |
? J/(mol·K) |
| Std enthalpy change of vaporization, ΔvapH |
? kJ/mol |
| Std entropy change of vaporization, ΔvapS |
? J/(mol·K) |
| Solid properties | |
| Std enthalpy change of formation, ΔfH |
? kJ/mol |
| Standard molar entropy, S |
? J/(mol K) |
| Heat capacity, cp | ? J/(mol K) |
| Liquid properties | |
| Std enthalpy change of formation, ΔfH |
? kJ/mol |
| Standard molar entropy, S |
? J/(mol K) |
| Heat capacity, cp | ? J/(mol K) |
| Gas properties | |
| Std enthalpy change of formation, ΔfH |
? kJ/mol |
| Standard molar entropy, S |
? J/(mol K) |
| Heat capacity, cp | ? J/(mol K) |
Spectral data[edit]
| 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 |
|
This box:
- Except where noted otherwise, data relate to Standard temperature and pressure.
- Reliability of data general note.
References[edit]
- Yue, Wang; Yi-jian, Jiang (2003). "Crystal orientation dependence of piezoelectric properties in LiNbO3 and LiTaO3". Optical Materials. 23 (1–2). Elsevier BV: 403–408. doi:10.1016/s0925-3467(02)00328-2. ISSN 0925-3467.
- Smith, R. T. (1967). "Elastic, Piezoelectric, and Dielectric Properties of Lithium Tantalate". Applied Physics Letters. 11 (5). AIP Publishing: 146–148. doi:10.1063/1.1755072. ISSN 0003-6951.