On the temperature dependence of ferro-magnetic saturation

Abstract

Accurate data on the saturation intensity of magnetization at low temperatures for monocrystalline materials were recently published by Allen and Constant(1) who, moreover, show that their results fit into the following interesting law: Let the saturation intensity at the temperature T be denoted by MST, the same intensity at the absolute zero of temperature by MSO and the Curie point by TC. If the ratio MST/MSO is plotted against T/TC, the points for all ferro-magnetic crystals of the cubic system fall onto one and the same universal curve. Two other curves obtain in the case of hexagonal and of ortho-rhombic crystals.

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