Pressure effect on the electrical properties of R7Rh3 (R=Dy and Y)

Abstract Electrical resistivity ρ has been measured for the rare earth intermetallic compounds R 7 Rh 3 (R=Dy and Y) under high pressure up to 3.0 GPa in the temperature range from 2 to 300 K. Y 7 Rh 3 and Dy 7 Rh 3 show semiconductive behavior at high temperatures under ambient pressure. The semicouductive character is slightly suppressed in Y 7 Rh 3 but is slightly enhanced in Dy 7 Rh 3 under pressure. Neel temperature of Dy 7 Rh 3 does not change up to 3.0 GPa, indicating the antiferromagnetic structure is stable under compression.