Corrosion and magnetoresistance of permalloy-rhodium alloys

Publisher Website
Google Scholar
Abstract
Bulk samples of permalloy‐rhodium alloys have been fabricated according to the formula (Ni.78 Fe.22)1−x Rhx where x is 0, 0.1, 0.2, and 0.3. It was found that the resistance of permalloy to atmospheric corrosion is significantly improved by the addition of rhodium. By contrast, a bulk sample of permalloy with 30 at.% ruthenium showed no improvement in corrosion resistance. The room temperature magnetic moment decreases with increasing rhodium content up to x=0.2 as expected for simple dilution assuming zero moment for the rhodium. The addition of 10 at.% rhodium to permalloy increases the resistivity by a factor of three and reduces the magnetoresistance anisotropy by nearly an order of magnitude. The resistivity and magnetoresistance changes are attributed to increased electron scattering caused by a rhodium 4d band.

This publication has 0 references indexed in Scilit: