Effect of pressure on the resistivity and Hall coefficient of amorphous metallic alloys

Measurements have been made of the resistivity as a function of hydrostatic pressure in the range 0-5 kbar in the temperature interval 180-330 K for the amorphous alloys ${\mathrm{Fe}}_{80}$ ${\mathrm{B}}_{20}$(Metglas 2605), ${\mathrm{Fe}}_{19}$ ${\mathrm{Ni}}_{61}$ ${\mathrm{P}}_{14}$ ${\mathrm{B}}_6$, ${\mathrm{Fe}}_{32}$ ${\mathrm{Ni}}_{36}$ ${\mathrm{Cr}}_{14}$ ${\mathrm{P}}_{12}$ ${\mathrm{B}}_6$ (Metglas 2826A), ${\mathrm{Pd}}_{82}$ ${\mathrm{Si}}_{18}$, and ${\mathrm{Cu}}_{42}$ ${\mathrm{Zr}}_{58}$. Measurements of the Hall coefficient were also made in ${\mathrm{Fe}}_{19}$ ${\mathrm{Ni}}_{61}$ ${\mathrm{P}}_{14}$ ${\mathrm{B}}_6$ and Metglas 2826A. The pressure coefficients of resistivity were uniformly negative and, with the exception of ${\mathrm{Fe}}_{80}$ ${\mathrm{B}}_{20}$, insensitive to temperature. The contributions of thermal and magnetic scattering to the resistivity are negligible. The simple formulation of the Ziman theory is found to be inadequate to account for the observed pressure dependence of the resistivity.