Magnetostriction of Aluminum-Iron Single Crystals in the Region of 6 to 30 Atomic Percent Aluminum

Publisher Website
Google Scholar
Abstract
The spontaneous saturation magnetostriction and the forced magnetostriction were measured on slowly cooled single crystals of the ferromagnetic aluminum‐iron alloys in the composition range from 6 to 30 atomic percent aluminum. The value of the first constant of spontaneous saturation magnetostriction at 6 atomic percent aluminum is similar to that at 6 atomic percent silicon in iron. At compositions containing larger amounts of aluminum, the first constant becomes very large; however, near 30% aluminum the constant drops and approaches zero. The second constant of spontaneous saturation magnetrostriction is negative below 17% aluminum, reaches a maximum near Fe3Al, and drops near 30% aluminum. Values of the isotropic forced‐magnetostriction constant below 25 atomic percent aluminum were found to be slightly higher than that for iron but less than that for silicon iron. Above 25% aluminum the isotropic constant became very large. The anisotropic forced‐magnetostriction constants were the largest for the single crystal having 29.6% aluminum; a good fit of the experimental data to the calculated curve was found for this alloy.

This publication has 7 references indexed in Scilit: