ELECTRICAL-RESISTIVITY OF HIGH-PURITY CHROMIUM SINGLE-CRYSTAL

This paper reports the results of a study of high purity chromium sing le crystal electric resistivity. The chromium single crystal used in t his study was produced from commercially available 5N electrolytic chr omium. The gaseous impurity level improved during single crystal produ ction. The crystal structure was investigated by means of the Laue met hod and the sample was confirmed to be a single crystal. The single cr ystal was carefully cut into a rectangular bar in preparation for the resistivity measurement. The electrical resistivity was measured for t he [100], [111] and [110] crystal orientations utilizing the four-prob e method. One measurement indicated 1.08 x 10(-7) Omega m at [100] at 20 degrees C; that is less than the previously reported pure chromium resistivity of 1.25 x 10(-7) Omega m.