| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5448292 | Materials Chemistry and Physics | 2017 | 5 Pages |
Abstract
Single crystals of 151Eu:YAG were grown by the vertical Bridgman method using Eu2O3 with isotopic enrichment of 151Eu of 97.5%. Additional Hf4+or Si4+ ions were introduced to favor a high concentrations of Eu2+. As compared to Eu:YAG with natural isotope composition, the EPR spectra of YAG doped with 151Eu isotope show a reduced number of hyperfine structure components and a well-resolved structure of a bigger number of electronic transitions. Optical properties of obtained crystals and the effects of heat treatments under oxidizing and reducing conditions are reported. Based on the analysis of Eu3+ distribution in oxidized Eu,Hf:YAG, in comparison to that in Eu:YAG, the concentration of Eu2+ in as-grown Eu,Hf:YAG is determined.
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Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
A.G. Petrosyan, H.R. Asatryan, K.L. Hovhannesyan, M.V. Derdzyan, S.P. Feofilov, A.V. Eganyan, R.S. Sargsyan,