About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
IEEE Transactions on Magnetics
Paper
Concentration dependence of magnetic and transport properties of amorphous gd-ge alloys
Abstract
The properties of Gdi100_xGex, amorphous alloys show an unusual dependence on composition. At x = 50% the saturation magnetization and Curie temperature decrease precipitously. The resistivity and spontaneous Hall effect also have complex behavior in the same composition region. There is a maximum in p at 43% Ge superimposed on a more monotonic increase with increasing x. Also at x = 43 % there is a pronounced maximum in the tangent of the Hall angle, pH/p. In addition to the peak at 43% the resistivity also increases steeply above 75% Ge extrapolating toward values found for semiconducting, amorphous germanium. The Hall conductivity (PH/P2), on the other hand, decreases monotonically with increasing x over the entire composition range, x = 20 to 82%. In general, the spontaneous Hall effect in this metal-semiconductor system can be understood in terms of the Berger “side jump” model. © 1983 IEEE