| Autor: |
Lucjan E. Misiak, Wieslawa Korczak, Zbigniew Korczak, Mieczyslaw L. Paradowski |
| Rok vydání: |
2001 |
| Předmět: |
|
| Zdroj: |
SPIE Proceedings. |
| ISSN: |
0277-786X |
| DOI: |
10.1117/12.435834 |
| Popis: |
The mixed LaxRE1-xF3 single crystal doped with Gd3+ were grown by a modified Bridgmann- Stockbarger method. The crystal field was investigated using electron paramagnetic resonance technique. The angular dependencies of Gd3+ line positions with magnetic field oriented in plane were measured in the temperature range 4.2-295 K. The surroundings of Gd3+ ions were investigated analyzing spin-Hamiltonian parameters in the light of the superposition model. The small distortion of the D43D trigonal symmetry has been observed in LaF3, La0.9Ce0.1F3 and La0.9Nd0.1F3 below 150K. The local structure deformation of the site symmetry of Dg3+ ions induced by temperature starts at about 150K becoming larger at 4.2K. In PrF3 the distortion was not observed in the temperature range 4.2- 295K. The results were compared with those of Gd3+- doped LiYF4 crystals.© (2001) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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