Patent ID: 9228251
Filing Date: 2016-01-05
CPC Classification: C22C,C23C,H01F

Claim Text:
1. A ferromagnetic material sputtering target having a composition comprising metal elements including 20 mol % or less of Cr and Co as the remainder, wherein the sputtering target has a structure comprising a metallic matrix (A) and a metallic phase (B) dispersed in the metallic matrix (A), the metallic phase (B) having a Co content of 90 wt % or more and being in a form of a plurality of separate spherical, pseudo-spherical, oblate spheroidal, or pseudo-oblate spheroidal shaped particles such that a difference in length of a shortest diameter of each of the metallic phase (B) particles and a longest diameter of each the metallic phase (B) particles is 0 to 50% of the longest diameter, wherein a maximum magnetic permeability of the metallic phase (B) is higher than that of the metal matrix (A) surrounding the metallic phase (B), wherein the metallic phase (B) contained in the sputtering target has as a whole a volume of 20 vol % or more of a total volume of the sputtering target, and wherein each of the particles of the metallic phase (B) has a size of 30 to 150 μm.