[en] In an effort to enhance adiabatic stability, copper containing percentage amounts of Gd₂O₃ powder was prepared. The specific heat (C/sub v/) of the resulting material was measured at temperatures from 2 to 12⁰K in zero and 2.4 T applied magnetic field. Below 5⁰K the C/sub v/ is one to two orders of magnitude higher than that of ordinary copper. For example, at 3.7⁰K in zero field the C/sub v/ of 2.4 percent GdAlO₃ is 1.5 mJ/g-K and for 7.2 percent Gd₂O₃ C/sub v/ is 3.7 mJ/g-K. These results are only weakly dependent on the magnetic field. Resistance ratios (room temperature to 4⁰K) of 99 to 46 are obtained, depending on the method of preparation. Mechanical properties of the copper seem good; photomicrographs of the material are shown. Additional cost for materials is $1.20 per pound for 3 percent oxide in copper. In superconducting applications, a fault which reduces the magnetic field on the copper will actually lower the temperature through adiabatic demagnetization unless there is an appreciable heat input. At 4⁰K, for example, a 3 percent oxide material could absorb the heat required to raise pure copper to 11⁰K, with no change in temperature. It is hoped that this ''doped'' copper will provide more adiabatic stability for composite superconductor-copper wires than pure copper alone