Database of Optical Constants for Cosmic Dust

Selection
	NEW: Aluminum oxide (Al2O3, corundum, T-dependent) Aluminum oxide (amorphous) Natural and natural-thermal-processed Mg-spinels (crystalline) NEW: Synthetic Mg-spinel (MgAl2O4, crystalline, T-dependent) Nonstoichiometric Mg-spinels (crystalline) Mg-spinels with impurities - NIR data (crystalline) Hibonite (CaAl12O19)

Optical Constants of Aluminium-based Oxides:

Corundum (Al2O3, T-dependent data): (Zeidler et al. 2013)

Al2 O3 at 300 K Spectra Link to a 300dpi image Al2 O3 E || c n-k-Data   Al2 O3 E || a,b n-k-Data Al2 O3 at 551 K Spectra Link to a 300dpi image Al2 O3 E || c n-k-Data   Al2 O3 E || a,b n-k-Data Al2 O3 at 738 K Spectra Link to a 300dpi image Al2 O3 E || c n-k-Data   Al2 O3 E || a,b n-k-Data Al2 O3 at 928 K Spectra Link to a 300dpi image Al2 O3 E || c n-k-Data   Al2 O3 E || a,b n-k-Data

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Aluminum oxide (amorphous): (Begemann et al. 1997)

Al2 O3 (porous) Spectra n-k-Data <>Link to a 300dpi and a 600dpi image   Al2 O3 (compact) Spectra n-k-Data Link to a 300dpi and a 600dpi image

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Natural and natural-thermal-processed Mg-spinels (crystalline) (Fabian et al. 2001)

MgAl2 O4 (natural) Spectra n-k-Data Link to a 300dpi and a 600dpi image   MgAl2 O4 (natural, annealed 1h, 1223 K) Spectra n-k-Data Link to a 300dpi and a 600dpi image   Additional information about this natural spinel and the thermal processing

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Synthetic spinel (MgAl2O4, Low-T data, S. Zeidler, Ph.D. thesis, 2013):

MgAl2 O4 at 10 K Spectra n-k-Data Link to a 300dpi image   MgAl2 O4 at 100 K Spectra n-k-Data Link to a 300dpi image   Additional information about oscillator parameters

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Synthetic spinel (MgAl2O4, High-T data): (Zeidler et al. 2013)

MgAl2 O4 at 300 K Spectra n-k-Data Link to a 300dpi image   MgAl2 O4 at 551 K Spectra n-k-Data Link to a 300dpi image   MgAl2 O4 at 738 K Spectra n-k-Data Link to a 300dpi image   MgAl2 O4 at 928 K Spectra n-k-Data Link to a 300dpi image

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Nonstoichiometric Mg-spinels (crystalline): (Fabian et al. 2001)

Mg1.01 Al1.99 O4 (synthetic) Spectra n-k-Data Link to a 300dpi and a 600dpi image   Mg0.94 Al2.04 O4 (synthetic) Spectra n-k-Data Link to a 300dpi and a 600dpi image   Mg0.82 Al2.12 O4 (synthetic) Spectra n-k-Data Link to a 300dpi and a 600dpi image   Mg0.73 Al2.17 O4 (synthetic) Spectra n-k-Data Link to a 300dpi and a 600dpi image   Mg0.53 Al2.31 O4 (synthetic) Spectra n-k-Data Link to a 300dpi and a 600dpi image   Mg0.43 Al2.38 O4 (synthetic) Spectra n-k-Data Link to a 300dpi and a 600dpi image   Additional information concerning the production and properties of these nonstoichiometric spinel

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Mg-spinels with impurities (crystalline) - NIR data: (Zeidler et al. 2011)

Mg1.02 Al1.93 Cr0.0087 Fe0.012 O4 (natural, Burma) Spectra n-k-Data Link to a 300dpi and a 600dpi image   Mg1.00 Al1.98 Cr0.02 O4 (synthetic) Spectra n-k-Data Link to a 300dpi and a 600dpi image   Mg0.93 Al1.99 Cr0.03 O4 (synthetic) Spectra n-k-Data Link to a 300dpi and a 600dpi image   Mg0.98 Al1.89 Cr0.12 O4 (synthetic) Spectra n-k-Data Link to a 300dpi and a 600dpi image   Mg0.98 Al1.78 Cr0.23 O4 (synthetic) Spectra n-k-Data Link to a 300dpi and a 600dpi image

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Hibonite (CaAl12O19): (Mutschke et al. 2002)

Spectra Link to a 300dpi and a 600dpi image Hibonite E || c n-k-Data   Hibonite E || a,b n-k-Data

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All n-k-Data tables consist of three columns. The first one contains the wavelength in micron (in the case of the Mg/Fe sulfides centimeter). The second one is the real part of the complex refractive index (n), the third one is the imaginary part (k). Values in brackets given after the chemical formulae are the material densities (if available).

For the details of the derivation of all n-k-Data I refer to the mentioned publications (see the Listof Publications).