# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: "<a href=\"https://refractiveindex.info/download/data/2017/schott-infrared-chalcogenide-glasses-irg-22-english-us-11052017.pdf\">SCHOTT Infrared Chalcogenide Glasses - IRG 22 Product flyer (Version Aptil 2017)</a>"
DATA:
  - type: formula 2
    wavelength_range: 1.0 12
    coefficients: 2.4834 2.8203 0.1352 0.9773 1420.7
  - type: tabulated k
    data: |
        0.8 4.1386E-06
        1.0 7.1560E-07
        1.5 4.0055E-07
        2.0 4.0295E-07
        2.5 5.0368E-07
        3.0 4.0933E-07
        3.5 4.2095E-07
        4.0 4.1652E-07
        4.5 1.3501E-06
        5.0 1.2119E-06
        5.5 2.1939E-07
        6.0 1.4345E-07
        6.5 1.5541E-07
        7.0 1.6736E-07
        7.5 4.7938E-07
        8.0 3.1315E-06
        8.5 1.0223E-06
        9.0 8.6463E-07
        9.5 9.8923E-07
        10.0 9.6071E-07
        10.5 1.8588E-06
        11.0 5.6961E-06
        11.5 2.2738E-05
        12.0 8.7023E-05
        12.5 1.8354E-04
        13.0 1.8392E-04
        13.5 9.0667E-05
        14.0 4.7651E-05
        14.5 4.0662E-05
        15.0 5.2713E-05
        15.5 8.5743E-05
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 6.41e-05 0 0 1.68e-07 0 9.96e-01
    density: 4.41 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: 20 100 °C
        coefficient: 12.5e-06 K<sup>-1</sup>
    specific_heat: 0.33 J/(g·K)
    thermal_conductivity:
      - value: 0.24 W/(m·K)
    transition_temperature: 368 °C
    Knoop_hardness: 1.41 GPa
    fracture_toughness: 0.55 MPa·m<sup>1/2</sup>
    shear_modulus: 8.9 GPa
    Youngs_modulus: 21.5 GPa
