- Database
- Experimentalists
- Date
- 2001-01-01
- Parent sample
- CH4 crystalline I
- Substrate material
- various
- Comments
- Generic sample of 3 experiments with different thicknesses
- Temperature
- 20.5 ± 0.1 K
- Temperature max
- 20.53 ± 0.01 K
- Comments
- temperature maxi is solid-solid transition temperature
- Type
- molecular gas
- Fluids
-
- CH4 100.0 ± 0.01 %
- Fluid temperature
- 20.5 ± 0.5 K
- Fluid pressure
- 1.0e-10 ± 5.0e-10 bar
- Comments
- in thermodynamic equilibrium with solid
- Number
- 1
- Layers
- Title
- CH4-I transformed to phase II by solid-solid transition
- Materials
- Sample
- CH4 crystalline II (this sample)
- Processing steps
-
Step Chronology Date Type Process Changes #1 on parent sample 2001-01-01 thermal slow cooling (~5K/h) below 20.53K under small vertical thermal gradient (0.1K/mm) monocrystals of CH4-I transformed to phase II by solid-solid transition