Defect segregation in CdGeAs2
| Autor: | Scott D. Setzler, Thomas M. Pollak, Thomas H. Myers, Peter G. Schunemann, Aaron J Ptak |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Condensed matter physics
Infrared Chemistry business.industry Edge (geometry) Condensed Matter Physics Crystallographic defect law.invention Inorganic Chemistry Core (optical fiber) Optics Hall effect law Materials Chemistry Freeze Technique Electron paramagnetic resonance Absorption (electromagnetic radiation) business |
| Zdroj: | Journal of Crystal Growth. 225:440-444 |
| ISSN: | 0022-0248 |
| DOI: | 10.1016/s0022-0248(01)00912-5 |
| Popis: | Increased axial temperature gradients and growth rates have resulted in segregation of unwanted absorbing defects to the edges of CdGeAs 2 single crystals produced by the horizontal gradient freeze technique. Long-wavelength infrared imaging of polished boules revealed a clear central core with absorption losses 26 times lower than in the darker edge regions. This pronounced segregation is attributed to the preferred incorporation of native defects at facets that form near the side walls of the horizontal boat. EPR, GDMS, and Hall effect analysis were used to characterize the nature of these defects. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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