Government of the United States of America, As Represented by the Secretary of Commerce

Virgil Provenzano

Robert D Shull

Alexander J Shapiro

A GdGeSirefrigerant compound is doped or alloyed with an effective amount of silicide-forming metal element such that the magnetic hysteresis losses in the doped GdGeSicompound are substantially reduced in comparison to the hysteresis losses of the undoped GdGeSicompound. The hysteresis losses can be nearly eliminated by doping the GdGeSicompound with iron, cobalt, manganese, copper, or gallium. The effective refrigeration capacities of the doped GdGeSicompound are significantly higher than for the undoped GdGeSicompound.

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Gaithersburg, MD, United States of America

Virgil Provenzano