Electric resistivity and thermoelectricity of NiNbZr and NiNbZrH glassy alloys

摘要

Electric resistivity ρ and thermoelectric power S of Ni _(36)Nb_(24)Zr_(40) and (Ni_(0.36)Nb _(0.24)Zr_(0.4))_(90)H_(10) glassy alloys were investigated in temperature region between 1.5 and 300 K. After resistivity curves of both alloys increase gradually with decreasing temperature down to around 6 K, they dropped suddenly and then reached zero resistivity at 2.1 K, leading to superconductivity. Linear curve with negative TCR of ρ vs T ~2 and slight increase of S/T in temperature region down to around 6 K clearly reveal Fermi-liquid phenomenon in electronic state for both alloys independent of hydrogen content.