Method of making plated memory film

TLDR: In this article, a thin magnetic nickel-iron alloy memory films were electroplated from an aqueous electrolyte including chloride, sulfate and ammonium sulfate as nickel source ion materials.

Abstract: Thin magnetic nickel-iron alloy memory films electroplated from an aqueous electrolyte including chloride, sulfate and ammonium sulfate as nickel source ion materials. Such an electrolyte is found to improve bath stability and reliability in continuous plating and also improve magnetic memory properties while alleviating such prior art electroplating difficulties as bath instability, decomposition, residue, difficulty of analysis, source material impurity and unreliability, source ion depletion and control over magnetic properties. The resultant plate has improved microstructure, with reduced stress and finer (controlled) grain structure and also has superior magnetic flux density and dispersion characteristics.