ТеО2 Material Properties

Here you’ll find some physical properties of Paratellurite (Tellurium Dioxide) single crystals – TeO2

Colorless synthetic single crystal, grown from melt with
Czochralski method

  • Symmetry: Tetragonal, 422 (D4)
  • Lattice distances: a = 4.8122 A; c = 7.6157 A
  • Molecular weight: 159.5
  • Dencity, g/cm3: 5.99 ± 0.03
  • Melting point: 733 oC
  • Hardness: 3 – 4 Moh’s hardness scale
  • Thermal expansion, 10-6 K-1 α11 = 17.7; α22 = 17.7; α33 = 5.5
  • Transmission: 0.35 – 5.0 μm
ТеО<sub>2</sub> Material Properties 1
ТеО<sub>2</sub> Material Properties 2
Refractive indexes:
λ, μm no ne Δn = ne – no
0.4047 2.4315 2.6167 0.1852
0.4358 2.3834 2.5583 0.1749
0.4678 2.3478 2.5164 0.1686
0.4800 2.3366 2.5036 0.1670
0.5086 2.3150 2.4779 0.1629
0.5461 2.2931 2.4520 0.1589
0.5893 2.2738 2.4295 0.1557
0.6328 2.2597 2.4119 0.1522
0.6438 2.2562 2.4086 0.1524
0.690 2.2450 2.3955 0.1505
0.800 2.226 2.373 0.147
1.00 2.208 2.352 0.144
Optical activity, along [001]:
λ, μm p, deg/mm λ, μm p, deg/mm
0.3698 587.1 0.5893 104.9
0.3783 520.6 0.6328 86.9
0.3917 437.4 0.700 67.4
0.4152 337.6 0.800 48.5
0.4382 271.0 0.900 37.4
0.4630 221.1 1.00 29.5
0.4995 171.2 1.10 23.8
0.5300 143.4
  • Dielectric permittivity: ε11 = 22.9; ε33 = 24.7
  • Elastic constans, ·10-10 N/m2: c11 = 5.57; c33 = 10.58; c44 = 2.65; c66 = 6.59; c12 = 5.12; c13 = 2.18
  • Photoelasticity coefficients: λ = 0.6328 μm
    p11 = 0.0074; p12 = 0.187; p13 = 0.340; p31 = 0.0905; p33 = 0.240; p44 = -0.17; p66 = -0.0463
  • Acoustooptical properties: λ = 0.6328 μm
Nsound Usound Vsound · 103м/с Nlight Elight M1 ·10-7 см2 c/г M2 ·10-18 c3
[100] [100] 2.98 [010] [100] 0.097 0.048
[100] [100] [010] [001] 22.9 10.6
[001] [001] 4.26 [010] [100] 142 34.5
[001] [001] [010] [001] 113 25.6
[100] [010] 3.04 [001] optional 3.70 1.76
[110] [110] 4.21 [-110] [110] 323 0.802
[110] [110] [-110] [001] 16.2 3.77
[101] [101] 3.64 [-101] [010] 101 33.4
[010] [010] 2.98 [-101] [101] 42.6 20.4
[110] [-110] 0.617 [001] optional 68.6 793
[101] [-101] 2.08 [010] [100] 76.4 77