Patent ID: 8580093
Filing Date: 2013-11-12
Classification: C23C

Abstract:
1. An aluminum alloy sputtering target, comprising: Al, from 0.05 atomic % to 5 atomic % of Ni, from 0.10 atomic % to 1 atomic % of La, and from 0.10 atomic % to 2 atomic % of Cu, wherein the Al and Ni form a spherical Al—Ni intermetallic compound, the Al, La, and Cu form a spherical Al—La—Cu intermetallic compound, a total area of an Al—Ni intermetallic compound having an average grain size in the aluminum alloy of from 0.3 μm to 3 μm is 70% or more by area ratio based on an entire area of the Al—Ni intermetallic compound, a total area of an Al—La—Cu intermetallic compound having an average grain size in the aluminum alloy of from 0.2 μm to 2 μm is 70% or more by area ratio based on an entire area of the Al—La—Cu intermetallic compound, and the percentages are determined by observing a portion of the sputtering target within a region of from ¼t to ¾t along a cross section vertical to a plane of the sputtering target by using a scanning electron microscope at a magnification of 2000, wherein t represents a thickness of the sputtering target in a direction vertical to a plane of the sputtering target.