Patent ID: 7608172
Filing Date: 2009-10-27
Classification: C22F,C23C,H01F

Abstract:
1. A high-purity nonferrous sputter target, the nonferrous sputter target having a sputter source selected from the group consisting of cobalt, the sputter source having a top surface for sputtering metal atoms onto a substrate, a side edge, a purity of at least about 99.99 weight percent, a single phase crystallographic structure, and a uniform PTF, the PTF uniformity being less than about 3.5 percent of the average PTF for the formula: where n is the number of measurements at different locations, n is at least 8, and x is the PTF measurement at each location 5 cm from the side edge, wherein the nonferrous metal sputter target deposits a film having a sheet resistance Rs uniformity of less than 1.0 percent.