AL2O3 DATA, FROM HANDBOOK OF THIN FILM MATERIALS, T. LICHTENSTEIN (1979)
ANGSTROMS
NK
  2600.000       1.823879      0.0000000E+00
  2800.000       1.815058      0.0000000E+00
  3000.000       1.807956      0.0000000E+00
  3200.000       1.802116      0.0000000E+00
  3400.000       1.797225      0.0000000E+00
  3600.000       1.793066      0.0000000E+00
  3800.000       1.789483      0.0000000E+00
  4000.001       1.786361      0.0000000E+00
  4200.001       1.783614      0.0000000E+00
  4400.001       1.781176      0.0000000E+00
  4600.001       1.778996      0.0000000E+00
  4800.001       1.777033      0.0000000E+00
  5000.001       1.775257      0.0000000E+00
  5200.001       1.773640      0.0000000E+00
  5400.001       1.772161      0.0000000E+00
  5600.000       1.770804      0.0000000E+00
  5800.000       1.769552      0.0000000E+00
  6000.000       1.768393      0.0000000E+00
  6200.000       1.767318      0.0000000E+00
  6400.000       1.766317      0.0000000E+00
  6600.000       1.765383      0.0000000E+00
  6800.000       1.764508      0.0000000E+00
  7000.000       1.763688      0.0000000E+00
  7199.999       1.762918      0.0000000E+00
  7399.999       1.762191      0.0000000E+00
  7599.999       1.761506      0.0000000E+00
  7799.999       1.760858      0.0000000E+00
  7999.999       1.760245      0.0000000E+00
  8199.998       1.759663      0.0000000E+00
  8399.998       1.759111      0.0000000E+00
  8599.998       1.758585      0.0000000E+00
  8799.998       1.758085      0.0000000E+00
  8999.997       1.757608      0.0000000E+00