ELECTROCRYSTALLIZATION PLATING BATH FOR FORMING MAGNETIC FILM, AND ELECTROCRYSTALLIZATION PLATING METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an electrocrystallization plating liquid for forming an Fe-Pt alloy magnetic film and an Fe-Pd alloy magnetic film as a new electrocrystallization plating bath for diversifying the magnetic film composing a magnetic recording medium and forming the magnetic film at a large scale and low cost.;SOLUTION: The electrocrystallization plating bath for forming a magnetic film of an iron-platinum alloy comprises: 1 to 50 g/L iron sulfate heptahydrate; 2 to 60 g/L chloroplatinic acid (IV); 0.5 to 50 g/L ammonium tartrate; and 5 to 250 g/L ammonia. The electrocrystallization plating bath for forming a magnetic film of an iron-palladium alloy comprises: 1 to 50 g/L iron sulfate heptahydrate; 0.2 to 50 g/L palladium chloride; 0.5 to 70 g/L ammonium tartrate; 0.5 to 30 g/L ammonium chloride; and 0.1 to 10 g/L cresolsulfonic acid.;COPYRIGHT: (C)2005,JPO&NCIPI