Band Gap of Forsterite
- 5 July 1968
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 161 (3836) , 51-53
- https://doi.org/10.1126/science.161.3836.51
Abstract
Optical absorption and reflectivity measurements on synthetic forsterite show that this silicate has a wide band gap of the order of 8.4 electron volts; thus it resembles other pure insulating oxides such as MgO. For natural olivines, in which divalent cations, mainly Fe 2+ , can replace Mg 2+ , all the optical absorption bands between the lattice overtones in the infrared and the first excitonic transition at 8.4 electron volts are due to the presence of iron.Keywords
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