Abstract
The four crystalline field parameters of the Dy3+ ion in the ethyl sulphate, V20, V40, V60 and V66 are fitted at 4.2°K and 58°K to give the known level splittings and g values. It is found that V20 similar 125 cm-1, V40 similar -26 cm-1, V60 similar -31 cm-1, and V66 similar 490 cm-1, and there exists a slight variation with temperature between 4°K and 58°K. These values are, however, in serious disagreement with those obtained by the extrapolation procedure of Elliott and Stevens. In particular, V20 is extraordinarily large, in agreement with the previous work of Judd on europium ethyl sulphate. An empirical variation of Vnm with atomic number is given which is in marked contrast to that predicted by Elliott and Stevens.
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Publication Info
- Year
- 1961
- Type
- article
- Volume
- 78
- Issue
- 5
- Pages
- 753-758
- Citations
- 37
- Access
- Closed
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Identifiers
- DOI
- 10.1088/0370-1328/78/5/315