Patent ID: 7927434
Filing Date: 2011-04-19
Classification: C22C,C22F,C23C,H01F

Abstract:
1. A Co—Cr—Pt—B alloy sputtering target consisting of 1 to 40 at % Cr, 1 to 30 at % Pt, 10 to 25 at % B and a remainder of Co, island-shaped rolled structures formed from a Co-rich phase based on a primary crystal formed upon casting, Co-rich phase island structures based on an eutectic structure formed upon solidification, and B-rich phase island structures based on an eutectic structure formed upon solidification, said Co-rich phase and B-rich phase island structures based on the eutectic structure formed upon solidification being located between the island-shaped structures formed from the Co-rich phase based on the primary crystal, and said target being a hot rolled structure formed as a result of hot rolling at a hot rolling ratio of 15 to 40%.