Sample
Name
CH4 crystalline II
Database
Experimentalists
Date
2001-01-01
Parent sample
CH4 crystalline I
Physical characteristics
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
Fluid temperature
20.5 ± 0.5 K
Fluid pressure
1.0e-10 ± 5.0e-10 bar
Comments
in thermodynamic equilibrium with solid
Publications
Number
1
Layers
Title
CH4-I transformed to phase II by solid-solid transition

Precursors

Materials

Produced sample

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