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Light absorption of Cr III in two host lattices of pyroxene and spinel type
Author(s) -
Hassanein M.
Publication year - 1979
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19794500122
Subject(s) - spinel , diopside , pyroxene , absorption (acoustics) , analytical chemistry (journal) , absorption band , absorption spectroscopy , crystallography , mineralogy , chemistry , materials science , physics , optics , olivine , metallurgy , chromatography
The light absorption of Cr 3+ – doped diopside CaMgSi 2 O 6 and spinel ZnGaAlO 4 was measured spectrophotometrically. Two absorption bands corresponding to the electron transition: 4 A 2g → 4 T 2g (low frequency band) and 4 A 2g → 4 T 1g (high frequency band) were obtained. Generally, the value of the estimated ligand field parameters Δ and B showed that the CrO bond in the studied two structures is of different character.