Electrical Resistance of Single-Crystal Single-Domain Chromium from 77 to 325 °K

Detailed measurements of the electrical resistance of a pure chromium single crystal, $\frac{R_{300}}{R_{4.2}}=350\mathrm{}$, have been made over the temperature range 77-325 ° K for both the single-domain $\overrightarrow{\mathrm{J}}\parallel \overrightarrow{\mathrm{Q}}$ and multidomain cases. The resistance for $\overrightarrow{\mathrm{J}}\parallel \overrightarrow{\mathrm{Q}}$ was about 4% greater than for the multidomain case from 100 to 250 °K. No discontinuities in resistance or changes in the derivative of the resistance with respect to temperature were observed near the spin-flip temperature, nor were any discontinuities or precursor effects observed at the Néel temperature. The excess resistance due to the antiferromagnetic condensation below the Néel temperature obeys a power law in the reduced temperature difference, $\frac{(T_N-T)}{T_N}$ for more than two decades with an exponent of 0.57 ± 0.03 for $\overrightarrow{\mathrm{J}}\parallel \overrightarrow{\mathrm{Q}}$ and 0.58 ± 0.02 for the multidomain case.