Influence of Cr-Content on both Resistivity and Its Pressure Effect in Amorphous Fe-Zr Base Alloys

The resistivity of amorphous Fe90-xCrxZr10 (x=2, 4, 7, 10, 13, 16, 20) alloys was measured in detail by a 4-probe dc technique under different hydrostatic pressure from 0.000 1 GPa to 2.5 GPa. It is observed that: (1) The resistivity 0 at room temperature and atmosphere pressure varies in a manner similar to the alphabet N as the content of Cr in amorphous Fe-Zr base alloys increases; (2) Relative resistivity /0 of amorphous Fe90-xCrxZr10 alloy drops monotonously when the hydrostatic pressure increases, the more the content of Cr, the smaller the decrease of resistivity; (3) Pressure coefficient of amorphous Fe90-xCrxZr10 alloys is quite sensitive to the variation in x; (4) Relation between /0 and x under 6 typical pressure was given. Finally we discussed the seletion of four physical models and the behavior of coherent exchange scattering under high hydrostatic pressure.