Method for forming pattern, method for producing magnetic recording medium using the same, magnetic recording medium, and method for producing stamper

A method for forming a pattern comprising:

• forming a processed layer on a substrate;
• forming an island-like metal underlayer including a first metal on the processed layer;
• forming a phase-separated release layer including at least a first metal, a second metal different from the first metal, and a metal oxide on the processed layer and the island-like metal underlayer;
• forming a mask layer on the phase-separated release layer;
• forming a concave-convex pattern on the mask layer;
• transferring the concave-convex pattern to the mask layer;
• transferring the concave-convex pattern to the phase-separated release layer;
• transferring the concave-convex pattern to the processed layer;
• and
• dissolving the phase-separated release layer using a peeling liquid for dissolving the first metal and the second metal and removing the mask layer from the processed layer to expose the concave-convex pattern comprised of the processed layer.