Predisintegration phenomena in CaF 2 crystals activated by Europium, Manganese and Gadolinium
The local impurity distribution in fluorite single crystals activated by europium, gadolinium and manganese has been studied with the aid of a scanning electron microscope. It is shown that the impurities in a crystal are distributed nonuniformly to form regions enriched and depleted with impurity....
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Published in | Journal of crystal growth Vol. 49; no. 1; pp. 109 - 114 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
1980
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Online Access | Get full text |
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Summary: | The local impurity distribution in fluorite single crystals activated by europium, gadolinium and manganese has been studied with the aid of a scanning electron microscope. It is shown that the impurities in a crystal are distributed nonuniformly to form regions enriched and depleted with impurity. It is proved that the nonuniform distribution of activators due to disintegration processes of solid solutions and to the impurity redistribution occurring in the course of annealing of the crystals. The concentration stability limits of solid solutions in the CaF
2-EuF
2 and CaF
2-MnF
2 systems have been calculated. |
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ISSN: | 0022-0248 1873-5002 |
DOI: | 10.1016/0022-0248(80)90069-X |