Patent ID: 11935936
Assignee: ULVAC, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC C  H | IPC C  H

Claim 6:
7. A production method of an aluminum alloy film, the production method comprising:
including Zr, Sc, and at least one type of a first additive element selected from the group consisting of Mo, Y, Nb, and Ti;
including Mn, Si, and at least one type of a second additive element selected from the group consisting of Mg and Ag;
further including at least one type of a third additive element selected from the group consisting of Ce, Nd, La, and Gd;
by a sputtering method using an Al alloy target in an Al pure metal; and
producing an aluminum alloy film having
a total content of Zr, Sc, and the first additive element of 0.01 atomic % or more and 1.0 atomic % or less on a substrate, the first additive element forming intermetallic compounds of Al,
a total content of Mn, Si, and the second additive element of 0.2 atomic % or more and 3.0 atomic % or less on a substrate, the second additive element being dissolved in Al, and
a total content of the third additive element being 0.1 atomic % or more and 1.0 atomic % or less.