Science. 1963 Jan 11;139(3550):111-2. doi: 10.1126/science.139.3550.111.
Pressure of 40,000 atmospheres at 25 degrees 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 A. At the same time the atom's volume decreases by 11 percent and the volume, observed macroscopically, decreases 3.2 percent.
在 25°C 时，40000 大气压会引起 ytterbium 金属的相变；面心立方结构转变为体心立方。原子半径从 1.82 变为 1.75Å。与此同时，原子体积减少了 11%，宏观上观察到的体积减少了 3.2%。
