| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1813787 | Physica B: Condensed Matter | 2010 | 4 Pages |
Abstract
Natural colorless beryl crystals are colored electrolytically at various coloration temperatures and voltages, which should mainly benefit from the appropriate coloration temperatures and voltages. Characteristic spectral bands of Fe2+, Fe3+, Cr3+ impurity ions and Maxixe-type color centers (CO3- and NO30 radicals) are observed in absorption and/or reflection spectra of colored crystals. Current–time curve for electrolytic coloration and its relationship with electrolytic coloration process is given. Formation and conversion mechanisms of impurity ions, radicals and color centers are discussed.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Weiwei Chen, Hongen Gu, Jia liu, Fen Wang, Dongliang Ma, Rui Zhu,