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

Abstract

Detailed measurements of the electrical resistance of a pure chromium single crystal, $\frac{{R}_{300}}{{R}_{4.2}}=350$, have been made over the temperature range 77-325 \ifmmode^\circ\else\textdegree\fi{} K for both the single-domain $\stackrel{\ensuremath{\rightarrow}}{\mathrm{J}}\ensuremath{\parallel}\stackrel{\ensuremath{\rightarrow}}{\mathrm{Q}}$ and multidomain cases. The resistance for $\stackrel{\ensuremath{\rightarrow}}{\mathrm{J}}\ensuremath{\parallel}\stackrel{\ensuremath{\rightarrow}}{\mathrm{Q}}$ was about 4% greater than for the multidomain case from 100 to 250 \ifmmode^\circ\else\textdegree\fi{}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 N\'eel temperature. The excess resistance due to the antiferromagnetic condensation below the N\'eel temperature obeys a power law in the reduced temperature difference, $\frac{({T}_{N}\ensuremath{-}T)}{{T}_{N}}$ for more than two decades with an exponent of 0.57 \ifmmode\pm\else\textpm\fi{} 0.03 for $\stackrel{\ensuremath{\rightarrow}}{\mathrm{J}}\ensuremath{\parallel}\stackrel{\ensuremath{\rightarrow}}{\mathrm{Q}}$ and 0.58 \ifmmode\pm\else\textpm\fi{} 0.02 for the multidomain case.