High-Temperature Magnetic Susceptibility of Dilute Cu(Cr) Alloys

Measurements of the magnetic susceptibility of very dilute alloys of chromium in copper are reported in the temperature range from room temperature up to 770°K. Application of Scalapino's theory would indicate a Kondo temperature near 20°K, and $S\approx \frac{4}{2}-\frac{5}{2}$; however, current theories do not adequately describe the experimental data over a wide temperature range.