Orientational order parameter in CO2–Kr solid solutions

Orientational order in binary CO2–Kr cryoalloys is studied at a fixed temperature of 30K as a function of the krypton content x in the deposited gas mixture ranging from 0to59mol.% by transmission electron diffraction. The integrated intensities of two regular reflections, (111) and (200), and two superlattice reflections, (210) and (211), are determined. The absolute values of the orientational order parameter η in the CO2 subsystem is recovered for all x using a previously proposed method modified for binary solid substitution solutions with randomly distributed components. For small x⩽0.05, where the predominant clusters are isolated krypton atoms, η decreases linearly with x and for 0.05

Keywords:

• Physics
• Lattice constant
• Condensed matter physics
• Phase transition
• Ranging
• Crystal structure
• Cluster (physics)
• Electron diffraction
• Absolute value
• Solid solution
• Molecular physics
• Atom
• Binary number
• Krypton
• Superlattice

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