SOME PROPERTIES OF THE SURFACE MAGNETIZATION OF BULK MAGNETS

Rigorous results in the statistical mechanics of the Ising model of a magnet are used to analyze recent experimental data obtained by electron-capture spectroscopy on the surface magnetization of gadolinium as well as to test recent approximate real-space renormalization-group calculations of the surface magnetization of the Ising model. The experimental data are found to be consistent with these exact results, while the approximate renormalization-group calculations are found to be inconsistent. © 1990 The American Physical Society.