Messung der Magnetostriktionskonstanten des Kobalts als Funktion der Temperatur

Abstract

The single crystal magnetostriction constants of hexagonal cobalt are measured between −200 °C and 400 °C in magnetic fields up to 26 kOe. The shear constant λ_E=2 λ_D−λ_A/2−λ_C/2 which is of interest in connection with domain structures, as well as the volume constant λ_V=λ_A+ λ_B+ λ_C show a relatively strong temperature dependance, which cannot be explained by present theories.