Effects of impurities on resistivity of electrodeposited high-B-s CoNiFe-based soft magnetic thin films

Controlling the very small amount of inclusion of impurity elements by addi tion to the plating bath of various organic additives was found to be very effective in developing electrodeposited high-B-s CoNiFe soft magnetic thin films with desirably high resistivity. Included impurities were suggested to cause not only electron scattering but also decreasing grain size, both of which led to an increase of the resistivity. Chemical state of impuritie s was indicated to be controllable by selection of additives based on the f unctional group for adsorption.