Patent ID: 7947434
Filing Date: 2011-05-24
Classification: G11B

Abstract:
1. A process of forming a plated film having a high aspect-ratio plated film portion having an aspect ratio of 1 or greater as defined by a depth-to-width ratio, comprising: a step of providing a substrate; a resist pattern-formation step of forming a resist pattern having a first opening that provides a base for the high aspect-ratio plated film portion having the aspect ratio of 1 or greater, the first opening having surface asperities formed by tracing of a standing wave occurring at an inner wall surface of the first opening; an inorganic film-formation step of applying an inorganic film on at least a bottom and the inner wall surface having the surface asperities of said first opening; a flattening step of flattening a surface of said inorganic film formed at said inorganic film-formation step to flatten the surface of the inorganic film formed on the inner wall surface of said first opening to eliminate surface asperities of said inorganic film formed by tracing of the standing wave occurring at the inner wall surface of the first opening in said resist at said resist pattern-formation step; a seed film-formation step of forming on the inorganic film at the first opening a seed film that provides a plating seed; and a plated film-formation step of growing a plated film comprising a magnetic material in such a way as to fill up said first opening, wherein said resist pattern-formation step involves forming a photoresist film on one surface of the substrate, and then subjecting said photoresist film to selective exposure and development, thereby forming a resist pattern having said first opening.