# 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: |
    G. E. Jellison Jr., T. E. Haynes, H. H. Burke.
    Optical functions of silicon-germanium alloys determined using spectroscopic ellipsometry.
    <a href="https://doi.org/10.1016/0925-3467(93)90035-Y"><i>Opt. Mat.</i> <b>2</b>, 105-117 (1993)</a>
COMMENTS: |
    Si<sub>x</sub>Ge<sub>1-x</sub>, x = 0.20. 8-μm film grown on Ge substrate.
DATA:
  - type: tabulated nk
    data: |
        0.240 1.624 3.109
        0.242 1.627 3.138
        0.244 1.655 3.189
        0.246 1.675 3.248
        0.248 1.688 3.290
        0.250 1.708 3.353
        0.252 1.739 3.413
        0.254 1.772 3.481
        0.256 1.788 3.539
        0.258 1.829 3.613
        0.260 1.862 3.680
        0.262 1.916 3.760
        0.264 1.958 3.833
        0.266 2.017 3.920
        0.268 2.081 4.001
        0.270 2.148 4.087
        0.272 2.233 4.179
        0.274 2.343 4.278
        0.276 2.457 4.385
        0.278 2.599 4.477
        0.280 2.773 4.564
        0.282 2.987 4.619
        0.284 3.215 4.632
        0.286 3.448 4.596
        0.288 3.685 4.511
        0.290 3.864 4.385
        0.292 4.002 4.248
        0.294 4.098 4.107
        0.296 4.194 3.963
        0.298 4.234 3.836
        0.300 4.273 3.722
        0.304 4.322 3.515
        0.308 4.333 3.355
        0.312 4.333 3.231
        0.316 4.345 3.117
        0.320 4.350 3.027
        0.324 4.357 2.944
        0.328 4.358 2.869
        0.332 4.370 2.808
        0.336 4.382 2.749
        0.340 4.385 2.703
        0.344 4.399 2.657
        0.348 4.405 2.615
        0.352 4.424 2.573
        0.356 4.443 2.535
        0.360 4.460 2.499
        0.364 4.479 2.465
        0.368 4.500 2.426
        0.372 4.526 2.384
        0.376 4.550 2.334
        0.380 4.559 2.291
        0.384 4.572 2.243
        0.388 4.581 2.195
        0.392 4.581 2.149
        0.396 4.578 2.103
        0.400 4.656 2.066
        0.404 4.554 2.041
        0.408 4.542 2.023
        0.412 4.534 2.010
        0.416 4.530 2.000
        0.420 4.531 1.997
        0.430 4.544 2.010
        0.440 4.589 2.020
        0.450 4.661 2.031
        0.460 4.761 2.032
        0.470 4.883 2.027
        0.480 5.046 1.982
        0.490 5.207 1.878
        0.500 5.325 1.732
        0.510 5.420 1.593
        0.520 5.530 1.434
        0.530 5.615 1.204
        0.540 5.591 0.941
        0.550 5.498 0.742
        0.560 5.384 0.599
        0.570 5.283 0.502
        0.580 5.176 0.426
        0.590 5.096 0.374
        0.600 5.027 0.327
        0.610 4.963 0.290
        0.620 4.907 0.258
        0.630 4.845 0.230
        0.640 4.799 0.213
        0.650 4.752 0.194
        0.660 4.712 0.180
        0.670 4.677 0.167
        0.680 4.642 0.160
        0.690 4.613 0.151
        0.700 4.587 0.142
        0.710 4.561 0.131
        0.720 4.533 0.121
        0.730 4.515 0.115
        0.740 4.500 0.106
        0.750 4.480 0.094
        0.760 4.460 0.084
        0.770 4.438 0.074
        0.780 4.420 0.067
        0.790 4.404 0.059
        0.800 4.389 0.051
        0.810 4.378 0.040
        0.820 4.352 0.038
        0.830 4.343 0.030
        0.840 4.294 0.021
CONDITIONS:
    x: 0.20
    thickness: 8 μm
    substrate: Ge