Patent ID: 7803238

Claim:
An Al-based alloy sputtering target consisting of 2-4 at % Ni, 0.4-2 at % of a rare earth element selected from the group consisting of Nd, Y, and Dy, and the balance Al, wherein there are 5.0×10 4 /mm 2 or more compounds whose aspect ratio is 2.5 or higher and whose equivalent diameter is 0.2 μm or larger, when a cross sectional surface perpendicular to the plane of the target is observed at a magnification of 2000 or higher, wherein the amount of bending of the Al-base alloy sputtering target is 2 mm or less after holding at 250° C. for 1 hour, and wherein the Al-base alloy sputtering target is formed by spray forming with a nozzle diameter (φ) ranging from 3.0 to 5.5 mm and a gas pressure ranging from 0.6 to 0.9 MPa, wherein (a) the major axis direction of 80% or more of the compounds are within the range of ±30 degrees with respect to the direction which is parallel to the plane of the target, and (b) the number of bulky compounds whose equivalent diameter exceeds 5 μm is 500/mm 2 or fewer, and wherein the orientation of the Al-base alloy sputtering target is controlled by rolling at a total processing rate of at least 60% and a processing rate per pass of at least 5%.