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REFERENCES: |
    Y. Nigara.
    Measurement of the optical constants of yttrium oxide.
    <a href="https://doi.org/10.1143/JJAP.7.404"><i>Jpn. J. Appl. Phys.</i> <b>7</b>, 404-408 (1968)</a>
DATA:
  - type: formula 1
    wavelength_range: 0.25 9.6
    coefficients: 0 2.578 0.1387 3.935 22.936