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The Polder tensor susceptibility is derived for a single crystal ferrite possessing cubic symmetric anisotropy energy. The tensor is derived for the 110 plane of the cube and its elements are exhibited as a function of the angle that the applied field makes with a cube edge, as well as of saturation magnetization, applied field, anisotropy constant, and frequency. The analysis is valid for ferrites with anisotropy fields much less than externally applied magnetic fields. The tensor is no longer diagonal for circular polarizations, except along the 100 and 111 axes.