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Optical Properties of α‐ and β‐TiCl 3
Author(s) -
Baldini G.,
Pollini I.,
Spinolo G.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680270108
Subject(s) - ion , absorption (acoustics) , materials science , refractive index , analytical chemistry (journal) , excited state , absorption spectroscopy , spectral line , range (aeronautics) , atomic physics , chemistry , optics , optoelectronics , physics , organic chemistry , chromatography , astronomy , composite material
Abstract In this paper the absorption spectra of α‐TiCl 3 single crystals and α‐ and β‐TiCl 3 vacuum deposited films are reported. The absorption of β‐TiCl 3 films is measured from 1 up to 10 eV in the temperature range 55 to 400°K. The optical thickness of the growing film is continuously measured with interference methods. The refractive index at 7000 Å is found to be 1.85 ± 0.10. A tentative attribution of the various absorption peaks to corresponding optical transitions is made in terms of the excited states of the Ti 3+ ion and of charge transfer from the Cl − ion to the Ti 3+ ion.