Ytterbium: Transition at High Pressure from Face-Centered Cubic to Body-Centered Cubic Structure

Science  11 Jan 1963:
Vol. 139, Issue 3550, pp. 111-112
DOI: 10.1126/science.139.3550.111


Pressure of 40,000 atmospheres at 25°C induces a phase transformation in ytterbium metal; the face-centered cubic structure changes to body-centered cubic. The radius of the atom changes from 1.82 to 1.75 Å. At the same time the atom's volume decreases by 11 percent and the volume, observed macroscopically, decreases 3.2 percent.