# 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-24-english-us-10042017.pdf\">SCHOTT Infrared Chalcogenide Glasses - IRG 24 Product flyer (Version April 2017)</a>"
DATA:
  - type: formula 2
    wavelength_range: 0.8 12
    coefficients: 2.8965 2.9567 0.1620 0.9461 1939.1
  - type: tabulated k
    data: |
        0.8 9.1119E-06
        1.0 3.4976E-07
        1.5 2.8997E-07
        2.0 3.2154E-07
        2.5 4.0192E-07
        3.0 7.2716E-07
        3.5 2.7992E-07
        4.0 1.9156E-07
        4.5 6.8693E-07
        5.0 4.4010E-07
        5.5 1.7542E-07
        6.0 1.4345E-07
        6.5 2.5928E-07
        7.0 1.1152E-07
        7.5 2.3921E-07
        8.0 3.2654E-06
        8.5 4.7515E-07
        9.0 5.0310E-07
        9.5 6.8347E-07
        10.0 1.0413E-06
        10.5 3.3239E-06
        11.0 5.5094E-06
        11.5 1.2534E-05
        12.0 6.0267E-05
        12.5 1.6948E-04
        13.0 1.8392E-04
        13.5 9.8437E-05
        14.0 5.5435E-05
        14.5 4.3487E-05
        15.0 4.8160E-05
        15.5 4.6666E-05
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 1.80e-05 0 0 2.10e-07 0 1.67e-03
    density: 4.41 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: 20 100 °C
        coefficient: 20.0e-06 K<sup>-1</sup>
    specific_heat: 0.37 J/(g·K)
    thermal_conductivity:
      - value: 0.18 W/(m·K)
    transition_temperature: 225 °C
    Knoop_hardness: 1.12 GPa
    fracture_toughness: 0.347 MPa·m<sup>1/2</sup>
    shear_modulus: 8.5 GPa
    Youngs_modulus: 20.5 GPa
