# 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: |
    M. R. Querry. Optical constants, <a href="https://apps.dtic.mil/sti/citations/ADA158623"><i>Contractor Report</i> CRDC-CR-85034 (1985)</a>
COMMENTS: |
    α-Fe<sub>2</sub>O<sub>3</sub> (Hematite). Ordinary ray (o).
CONDITIONS:
    direction: o
DATA:
  - type: tabulated nk
    data: |
        0.2100 1.202 1.207
        0.2200 1.471 1.291
        0.2300 1.659 1.309
        0.2400 1.790 1.309
        0.2500 1.899 1.315
        0.2600 2.007 1.317
        0.2700 2.110 1.300
        0.2800 2.197 1.270
        0.2900 2.261 1.233
        0.3000 2.307 1.208
        0.3100 2.357 1.195
        0.3200 2.416 1.169
        0.3300 2.454 1.122
        0.3400 2.450 1.085
        0.3500 2.430 1.093
        0.3600 2.433 1.140
        0.3700 2.470 1.202
        0.3800 2.545 1.258
        0.3900 2.645 1.291
        0.4000 2.756 1.294
        0.4100 2.863 1.271
        0.4200 2.962 1.231
        0.4300 3.052 1.173
        0.4400 3.126 1.101
        0.4500 3.181 1.020
        0.4600 3.217 0.943
        0.4700 3.242 0.874
        0.4800 3.264 0.809
        0.4900 3.280 0.741
        0.5000 3.282 0.675
        0.5100 3.272 0.622
        0.5200 3.262 0.587
        0.5300 3.266 0.564
        0.5400 3.286 0.538
        0.5500 3.318 0.498
        0.5600 3.348 0.437
        0.5700 3.361 0.357
        0.5800 3.348 0.274
        0.5900 3.312 0.202
        0.6000 3.265 0.149
        0.6100 3.218 0.114
        0.6200 3.175 0.089
        0.6300 3.135 0.073
        0.6400 3.102 0.065
        0.6500 3.074 0.057
        0.6600 3.051 0.051
        0.6700 3.029 0.043
        0.6800 3.008 0.038
        0.6900 2.990 0.034
        0.7000 2.972 0.031
        0.7100 2.956 0.028
        0.7200 2.942 0.026
        0.7300 2.929 0.024
        0.7400 2.916 0.022
        0.7500 2.903 0.021
        0.7600 2.892 0.020
        0.7700 2.882 0.020
        0.7800 2.872 0.019
        0.7900 2.862 0.019
        0.8000 2.853 0.020
        0.8100 2.845 0.022
        0.8200 2.838 0.024
        0.8300 2.833 0.025
        0.8400 2.828 0.026
        0.8500 2.824 0.027
        0.8600 2.820 0.027
        0.8700 2.816 0.026
        0.8800 2.813 0.026
        0.8900 2.809 0.026
        0.9000 2.805 0.024
        0.9100 2.801 0.024
        0.9200 2.798 0.023
        0.9300 2.794 0.023
        0.9400 2.791 0.023
        0.9500 2.789 0.022
        0.9600 2.787 0.021
        0.9700 2.784 0.020
        0.9800 2.781 0.018
        0.9900 2.778 0.017
        1.0000 2.775 0.015
        1.0100 2.771 0.015
        1.0200 2.768 0.014
        1.0300 2.765 0.013
        1.0400 2.762 0.012
        1.0500 2.759 0.011
        1.0600 2.755 0.011
        1.0700 2.753 0.011
        1.0800 2.750 0.011
        1.0900 2.747 0.011
        1.1000 2.745 0.011
        1.1100 2.742 0.011
        1.1200 2.740 0.011
        1.1300 2.739 0.011
        1.1400 2.737 0.010
        1.1500 2.734 0.010
        1.1600 2.732 0.009
        1.1700 2.729 0.009
        1.1800 2.727 0.010
        1.1900 2.725 0.010
        1.2000 2.723 0.011
        1.2100 2.721 0.011
        1.2200 2.719 0.011
        1.2300 2.718 0.011
        1.2400 2.716 0.011
        1.2500 2.715 0.011
        1.2600 2.714 0.011
        1.2700 2.712 0.010
        1.2800 2.709 0.010
        1.2900 2.708 0.011
        1.3000 2.706 0.012
        1.3100 2.705 0.013
        1.3200 2.704 0.013
        1.3300 2.703 0.013
        1.3400 2.702 0.013
        1.3500 2.700 0.013
        1.3600 2.699 0.013
        1.3700 2.697 0.013
        1.3800 2.696 0.014
        1.3900 2.695 0.015
        1.4000 2.693 0.015
        1.4100 2.693 0.016
        1.4200 2.692 0.017
        1.4300 2.692 0.017
        1.4400 2.691 0.017
        1.4500 2.690 0.017
        1.4600 2.689 0.017
        1.4700 2.687 0.017
        1.4800 2.686 0.018
        1.4900 2.686 0.018
        1.5000 2.685 0.019
        1.5100 2.684 0.019
        1.5200 2.683 0.019
        1.5300 2.683 0.020
        1.5400 2.682 0.021
        1.5500 2.682 0.021
        1.5600 2.682 0.020
        1.5700 2.681 0.020
        1.5800 2.680 0.020
        1.5900 2.679 0.021
        1.6000 2.678 0.022
        1.6100 2.677 0.023
        1.6200 2.677 0.023
        1.6300 2.677 0.024
        1.6400 2.677 0.024
        1.6500 2.677 0.024
        1.6600 2.676 0.024
        1.6700 2.676 0.024
        1.6800 2.676 0.024
        1.6900 2.675 0.024
        1.7000 2.674 0.024
        1.7100 2.674 0.024
        1.7200 2.673 0.025
        1.7300 2.673 0.025
        1.7400 2.673 0.025
        1.7500 2.672 0.025
        1.7600 2.672 0.025
        1.7700 2.671 0.026
        1.7800 2.672 0.026
        1.7900 2.671 0.025
        1.8000 2.670 0.024
        1.8100 2.669 0.025
        1.8200 2.668 0.025
        1.8300 2.667 0.026
        1.8400 2.666 0.026
        1.8500 2.665 0.027
        1.8600 2.664 0.029
        1.8700 2.664 0.031
        1.8800 2.665 0.032
        1.8900 2.666 0.032
        1.9000 2.667 0.032
        1.9100 2.667 0.032
        1.9200 2.667 0.032
        1.9300 2.667 0.032
        1.9400 2.667 0.032
        1.9500 2.667 0.031
        1.9600 2.667 0.031
        1.9700 2.666 0.031
        1.9800 2.666 0.031
        1.9900 2.665 0.031
        2.0000 2.665 0.031
        2.0100 2.665 0.032
        2.0200 2.665 0.032
        2.0300 2.665 0.032
        2.0400 2.665 0.032
        2.0500 2.664 0.032
        2.0600 2.664 0.033
        2.0700 2.664 0.033
        2.0800 2.664 0.033
        2.0900 2.664 0.033
        2.1000 2.664 0.032
        2.1100 2.664 0.033
        2.1200 2.663 0.033
        2.1300 2.663 0.033
        2.1400 2.663 0.033
        2.1500 2.663 0.033
        2.1600 2.663 0.034
        2.1700 2.663 0.034
        2.1800 2.663 0.034
        2.1900 2.662 0.034
        2.2000 2.662 0.034
        2.2100 2.662 0.034
        2.2200 2.662 0.034
        2.2300 2.662 0.034
        2.2400 2.662 0.034
        2.2500 2.662 0.034
        2.2600 2.662 0.034
        2.2700 2.662 0.034
        2.2800 2.662 0.034
        2.2900 2.662 0.034
        2.3000 2.662 0.034
        2.3100 2.661 0.034
        2.3200 2.661 0.034
        2.3300 2.661 0.034
        2.3400 2.661 0.034
        2.3500 2.661 0.034
        2.3600 2.661 0.034
        2.3700 2.660 0.034
        2.3800 2.660 0.034
        2.3900 2.660 0.035
        2.4000 2.660 0.034
        2.4100 2.660 0.034
        2.4200 2.659 0.034
        2.4300 2.659 0.035
        2.4400 2.659 0.035
        2.4500 2.660 0.035
        2.4600 2.660 0.034
        2.4700 2.659 0.034
        2.4800 2.659 0.034
        2.4900 2.658 0.033
        2.5000 2.658 0.034
        2.5063 2.658 0.034
        2.5126 2.658 0.034
        2.5189 2.657 0.034
        2.5253 2.657 0.035
        2.5316 2.657 0.035
        2.5381 2.658 0.036
        2.5445 2.658 0.036
        2.5510 2.658 0.035
        2.5575 2.658 0.036
        2.5641 2.658 0.036
        2.5707 2.659 0.036
        2.5773 2.659 0.035
        2.5840 2.659 0.035
        2.5907 2.659 0.035
        2.5974 2.659 0.035
        2.6042 2.659 0.035
        2.6110 2.659 0.034
        2.6178 2.659 0.034
        2.6247 2.659 0.034
        2.6316 2.659 0.033
        2.6385 2.658 0.033
        2.6455 2.657 0.033
        2.6525 2.657 0.034
        2.6596 2.658 0.034
        2.6667 2.659 0.034
        2.6738 2.659 0.033
        2.6810 2.658 0.032
        2.6882 2.657 0.032
        2.6954 2.657 0.032
        2.7027 2.657 0.032
        2.7100 2.657 0.032
        2.7174 2.657 0.032
        2.7248 2.657 0.032
        2.7322 2.656 0.032
        2.7397 2.656 0.032
        2.7473 2.655 0.032
        2.7548 2.655 0.032
        2.7624 2.656 0.032
        2.7701 2.656 0.032
        2.7778 2.655 0.031
        2.7855 2.655 0.031
        2.7933 2.655 0.031
        2.8011 2.655 0.031
        2.8090 2.654 0.031
        2.8169 2.654 0.031
        2.8249 2.654 0.031
        2.8329 2.653 0.031
        2.8409 2.653 0.031
        2.8490 2.653 0.031
        2.8571 2.653 0.031
        2.8653 2.652 0.031
        2.8736 2.652 0.031
        2.8818 2.652 0.031
        2.8902 2.652 0.031
        2.8986 2.651 0.031
        2.9070 2.651 0.031
        2.9155 2.651 0.031
        2.9240 2.650 0.031
        2.9326 2.650 0.031
        2.9412 2.650 0.031
        2.9499 2.650 0.032
        2.9586 2.650 0.032
        2.9674 2.650 0.032
        2.9762 2.650 0.032
        2.9851 2.650 0.032
        2.9940 2.650 0.032
        3.0030 2.650 0.032
        3.0120 2.650 0.031
        3.0211 2.649 0.031
        3.0303 2.649 0.031
        3.0395 2.648 0.031
        3.0488 2.648 0.032
        3.0581 2.648 0.031
        3.0675 2.648 0.031
        3.0769 2.648 0.031
        3.0864 2.648 0.031
        3.0960 2.647 0.030
        3.1056 2.647 0.030
        3.1153 2.646 0.030
        3.1250 2.646 0.031
        3.1348 2.646 0.031
        3.1447 2.646 0.031
        3.1546 2.645 0.031
        3.1646 2.645 0.031
        3.1746 2.644 0.031
        3.1847 2.644 0.031
        3.1949 2.644 0.031
        3.2051 2.644 0.031
        3.2154 2.643 0.031
        3.2258 2.643 0.031
        3.2362 2.643 0.032
        3.2468 2.643 0.031
        3.2573 2.643 0.031
        3.2680 2.642 0.031
        3.2787 2.642 0.031
        3.2895 2.642 0.031
        3.3003 2.642 0.031
        3.3113 2.640 0.032
        3.3223 2.640 0.032
        3.3333 2.641 0.032
        3.3445 2.641 0.032
        3.3557 2.641 0.032
        3.3670 2.641 0.032
        3.3784 2.641 0.032
        3.3898 2.641 0.032
        3.4014 2.640 0.032
        3.4130 2.641 0.032
        3.4247 2.640 0.031
        3.4364 2.640 0.031
        3.4483 2.640 0.031
        3.4602 2.639 0.031
        3.4722 2.639 0.031
        3.4843 2.639 0.030
        3.4965 2.638 0.030
        3.5088 2.638 0.030
        3.5211 2.638 0.030
        3.5336 2.637 0.030
        3.5461 2.637 0.030
        3.5587 2.636 0.030
        3.5714 2.635 0.030
        3.5842 2.635 0.030
        3.5971 2.635 0.031
        3.6101 2.635 0.031
        3.6232 2.635 0.030
        3.6364 2.634 0.030
        3.6496 2.634 0.030
        3.6630 2.634 0.030
        3.6765 2.633 0.030
        3.6900 2.633 0.030
        3.7037 2.632 0.029
        3.7175 2.632 0.030
        3.7313 2.631 0.030
        3.7453 2.631 0.030
        3.7594 2.631 0.030
        3.7736 2.630 0.029
        3.7879 2.630 0.029
        3.8023 2.629 0.029
        3.8168 2.628 0.029
        3.8314 2.628 0.030
        3.8462 2.628 0.030
        3.8610 2.627 0.030
        3.8760 2.627 0.029
        3.6911 2.627 0.030
        3.9063 2.626 0.029
        3.9216 2.625 0.030
        3.9370 2.625 0.030
        3.9526 2.625 0.029
        3.9683 2.624 0.029
        3.9841 2.624 0.029
        4.0000 2.624 0.029
        4.0161 2.623 0.029
        4.0323 2.623 0.029
        4.0486 2.622 0.029
        4.0650 2.621 0.028
        4.0816 2.620 0.028
        4.0984 2.620 0.029
        4.1152 2.619 0.029
        4.1322 2.619 0.028
        4.1494 2.618 0.028
        4.1667 2.616 0.028
        4.1841 2.615 0.029
        4.2017 2.615 0.030
        4.2194 2.616 0.030
        4.2373 2.616 0.030
        4.2553 2.615 0.029
        4.2735 2.615 0.028
        4.2918 2.613 0.028
        4.3103 2.612 0.028
        4.3290 2.611 0.028
        4.3478 2.610 0.028
        4.3668 2.609 0.028
        4.3860 2.609 0.029
        4.4053 2.608 0.029
        4.4248 2.607 0.029
        4.4444 2.607 0.030
        4.4643 2.606 0.030
        4.4843 2.605 0.030
        4.5045 2.605 0.030
        4.5249 2.604 0.030
        4.5455 2.604 0.030
        4.5662 2.603 0.030
        4.5872 2.602 0.030
        4.6083 2.602 0.030
        4.6296 2.601 0.030
        4.6512 2.600 0.030
        4.6729 2.599 0.030
        4.6948 2.598 0.030
        4.7170 2.598 0.030
        4.7393 2.597 0.030
        4.7619 2.596 0.030
        4.7847 2.595 0.030
        4.8077 2.595 0.030
        4.8309 2.593 0.030
        4.8544 2.593 0.030
        4.8780 2.592 0.030
        4.9020 2.591 0.031
        4.9261 2.590 0.031
        4.9505 2.588 0.031
        4.9751 2.588 0.031
        5.0000 2.587 0.031
        5.0251 2.586 0.031
        5.0505 2.585 0.030
        5.0761 2.584 0.031
        5.1020 2.583 0.031
        5.1282 2.582 0.031
        5.1546 2.581 0.031
        5.1813 2.580 0.031
        5.2083 2.579 0.031
        5.2356 2.578 0.031
        5.2632 2.576 0.031
        5.2910 2.575 0.031
        5.3191 2.575 0.031
        5.3476 2.573 0.031
        5.3763 2.572 0.031
        5.4054 2.570 0.031
        5.4348 2.569 0.031
        5.4645 2.568 0.031
        5.4945 2.567 0.032
        5.5249 2.565 0.032
        5.5556 2.564 0.032
        5.5866 2.562 0.032
        5.6180 2.561 0.032
        5.6497 2.560 0.032
        5.6818 2.559 0.032
        5.7143 2.557 0.032
        5.7471 2.556 0.032
        5.7803 2.554 0.031
        5.8140 2.552 0.032
        5.8480 2.551 0.032
        5.8824 2.549 0.032
        5.9172 2.547 0.031
        5.9524 2.545 0.031
        5.9880 2.543 0.032
        6.0241 2.542 0.032
        6.0606 2.541 0.032
        6.0976 2.539 0.032
        6.1350 2.536 0.031
        6.1728 2.534 0.031
        6.2112 2.532 0.031
        6.2500 2.529 0.032
        6.2893 2.527 0.032
        6.3291 2.525 0.033
        6.3694 2.524 0.033
        6.4103 2.522 0.033
        6.4516 2.520 0.033
        6.4935 2.517 0.033
        6.5359 2.516 0.033
        6.5789 2.514 0.033
        6.6225 2.511 0.032
        6.6667 2.508 0.031
        6.7114 2.505 0.032
        6.7568 2.503 0.032
        6.8027 2.500 0.032
        6.8493 2.498 0.032
        6.8966 2.494 0.031
        6.9444 2.491 0.031
        6.9930 2.488 0.031
        7.0423 2.485 0.030
        7.0922 2.481 0.030
        7.1429 2.477 0.030
        7.1942 2.474 0.030
        7.2464 2.469 0.030
        7.2993 2.466 0.030
        7.3529 2.462 0.029
        7.4074 2.457 0.029
        7.4627 2.452 0.030
        7.5188 2.447 0.031
        7.5758 2.443 0.031
        7.6336 2.438 0.031
        7.6923 2.433 0.032
        7.7519 2.428 0.033
        7.8125 2.423 0.034
        7.8740 2.418 0.035
        7.9365 2.414 0.035
        8.0000 2.409 0.036
        8.0645 2.404 0.036
        8.1301 2.398 0.037
        8.1967 2.392 0.038
        8.2645 2.386 0.039
        8.3333 2.381 0.039
        8.4034 2.375 0.040
        8.4746 2.369 0.041
        8.5470 2.363 0.042
        8.6207 2.356 0.043
        8.6957 2.349 0.044
        8.7719 2.344 0.044
        8.8496 2.337 0.044
        8.9286 2.329 0.044
        9.0090 2.321 0.044
        9.0909 2.312 0.045
        9.1743 2.303 0.046
        9.2593 2.294 0.047
        9.3458 2.284 0.048
        9.4340 2.275 0.050
        9.5238 2.265 0.052
        9.6154 2.256 0.054
        9.7087 2.246 0.055
        9.8039 2.236 0.055
        9.9010 2.224 0.055
        10.0000 2.212 0.056
        10.1010 2.199 0.057
        10.2041 2.185 0.058
        10.3093 2.170 0.060
        10.4167 2.155 0.064
        10.5263 2.141 0.066
        10.6383 2.126 0.069
        10.7527 2.110 0.072
        10.8696 2.095 0.076
        10.9890 2.081 0.079
        11.1111 2.065 0.078
        11.2360 2.045 0.077
        11.3636 2.023 0.076
        11.4943 1.999 0.077
        11.6279 1.974 0.080
        11.7647 1.949 0.081
        11.9048 1.921 0.083
        12.0482 1.891 0.085
        12.1951 1.857 0.088
        12.3457 1.823 0.093
        12.5000 1.786 0.097
        12.6582 1.745 0.102
        12.8205 1.702 0.106
        12.9870 1.653 0.111
        13.1579 1.597 0.119
        13.3333 1.536 0.132
        13.5135 1.471 0.147
        13.6986 1.399 0.167
        13.8889 1.322 0.192
        14.0845 1.238 0.221
        14.2857 1.145 0.256
        14.4928 1.037 0.297
        14.7059 0.910 0.350
        14.9254 0.754 0.440
        15.1515 0.601 0.586
        15.3846 0.478 0.779
        15.6250 0.403 0.994
        15.8730 0.361 1.201
        16.1290 0.327 1.406
        16.3934 0.307 1.624
        16.6667 0.304 1.855
        16.9492 0.318 2.096
        17.2414 0.342 2.358
        17.5439 0.395 2.669
        17.8571 0.522 3.035
        18.1818 0.787 3.436
        18.5185 1.265 3.791
        18.8679 2.007 3.911
        19.2308 2.820 3.368
        19.6078 2.673 2.292
        20.0000 1.764 2.054
        20.4082 1.105 2.553
        20.8333 0.902 3.328
        21.2766 1.015 4.068
        21.7391 1.268 4.993
        22.2222 2.230 6.303
        22.7273 4.992 6.991
        23.2558 7.431 4.077
        23.8095 6.229 1.587
        24.3902 4.966 0.982
        25.0000 4.100 0.718
        25.6410 3.262 0.656
        26.3158 2.383 0.803
        27.0270 1.554 1.390
        27.7778 1.030 2.254
        28.5714 0.808 3.245
        29.4118 0.846 4.284
        30.3030 1.005 5.382
        31.2500 1.402 6.922
        32.2581 2.681 9.062
        33.3333 6.494 11.145
        34.4828 12.585 8.306
        35.7143 11.932 2.150
        37.0370 9.433 0.782
        38.4615 8.312 0.389
        40.0000 7.290 0.132
        41.6667 6.649 0.601
        43.4783 7.022 0.668
        45.4545 6.789 0.030
        47.6190 6.359 -0.074
        50.0000 6.094 -0.117
        52.6316 5.844 -0.148
        55.5556 5.658 -0.144
        58.8235 5.509 -0.134
        62.5000 5.387 -0.124
        66.6667 5.285 -0.113
        71.4286 5.198 -0.103
        76.9231 5.124 -0.094
        83.3333 5.060 -0.085
        90.9091 5.005 -0.076