Magnetic Moments of Alloys and Compounds of Iron and Cobalt with Rare Earth Metal Additions

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Abstract
In order to determine whether ferromagnetic or antiferromagnetic exchange coupling would result from alloying the rare earth metals with cobalt or iron, a number of melts were made containing these elements. The data on saturation magnetization with composition and on saturation magnetization with temperature obtained on the cobalt-gadolinium system indicates strongly that antiferromagnetic exchange coupling exists in this system.