Hall effect of Ce(Ru1-xFex)2Al 10 single crystal

Abstract

The Hall resistivity ρH has been measured between 2 K and 300 K for pseudoternary compounds Ce(Ru1-xFex)2Al10 (x=0.375, 0.625, 1) single crystals up to 7 T. The ρH shows linear dependence against magnetic field except low temperatures. We calculated Hall coefficient RH by the gradient of ρH under the field between 5 T and 7 T, where the anomalous Hall effect expected to be small. While RH for CeRu2Al10 drastically increases below mysterious antiferromagnetic ordering temperature (T0 ∼ 27 K), RH decreases by replacing Ru with Fe. The RH becomes negative at lowest temperatures for x 0.375, x 0.625 and x 1. The reversal of the sign suggests that Ce(Ru1-xFex)2Al10 is in a multicarrier system. © Published under licence by IOP Publishing Ltd.