- Database
- Experimentalists
- Date
- 1992-01-01
- Parent sample
- CH4 in beta-N2 crystalline
- Surface roughness
- very low
- Substrate material
- between 2 MgF2 windows
- Comments
- Generic sample of experiments of alpha N2 with different low CH4 concentrations: 0.1, 0.25, 0.8 and 2%
- Temperature
- 35.0 $\pm$ 0.3 $K$
- Temperature max
- 35.6 $\pm$ 0.1 $K$
- Comments
- Temperature error is mostly due to sample temperature gradient within the spot (1K/cm). Temperature maxi is the formation temperature (beta-alpha transition)
- Number
- 1
- Layers
- Title
- Formation of alpha-N2:CH4 solid solution by solid-solid transition
- Samples
- Sample
- CH4 in alpha-N2 crystalline (this sample)
- Processing steps
-
Step Chronology Date Type Process Changes #1 on parent sample 1992-01-01 thermal slow cooling (0.5K/h) below 35.6K under small vertical thermal gradient (0.5K/mm) monocrystals of beta-N2:CH4 solid solution (from 0.1, 0.25, 0.8 and 2% CH4 in liquid) transformed to phase alpha-N2:CH4 solid solution by solid-solid transition