Patent ID: 9181617
Filing Date: 2015-11-10
Classification: C22C,C22F,C23C,G11B,H01F

Abstract:
1. A sputtering target of a ferromagnetic material consisting of metallic phases and non-magnetic oxide grains, said metallic phases consisting of a phase (A) and a Co-based alloy phase (B) and consisting of a composition as a whole of 20 mol % or less of Cr and Co as the remainder; wherein the sputtering target has a structure in which the phase (A) forms a matrix thereof consisting of Cr and Co, the Co-based alloy phase (B) has a different composition than that of the phase (A) and exists as grains dispersed in the phase (A), and the non-magnetic oxide grains are dispersed only within the phase (A), wherein, in a cross-section of the sputtering target, the oxide grains occupy an area of 80% or less of an area of the phase (A) existing between a periphery line of the Co-based alloy phase (B) and a line having a distance of 2 μm from the periphery line, and wherein the grains of the Co-based alloy phase (B) have an average grain size of 10 μm or more and 150 μm or less.