| Autor: |
H.-J. Reyher, M Pape, S Mendricks, N Hausfeld |
| Rok vydání: |
1999 |
| Předmět: |
|
| Zdroj: |
Advances in Photorefractive Materials, Effects and Devices. |
| DOI: |
10.1364/apmed.1999.mc7 |
| Popis: |
In photorefractive Pb5Ge3O11 and (Pb0.8Ba0.02)5Ge3O11 crystals, Pb2+ host lattice ions can be recharged by visible light to Pb3+. The magnetic and structural properties of this hole trapping center, metastable at low temperatures, is characterized by EPR. This information is correlated with optical properties by optically detected magnetic resonance (ODMR) via the magnetic circular dichroism (MCD) of absorption. A pronounced photochromic effect can also be associated with this charge trapping center. Several observations give evidence that this Pb3+ center is involved in the holographic recharging effects in lead germanate. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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