Patent ID: 8679301

Claim:
A method for performing pasting in a deposition chamber, comprising: depositing a Ti pasting layer on at least an interior portion of the deposition chamber by sputtering a Ti target, thereby reducing contaminants in the deposition chamber for subsequent depositions; after depositing the Ti pasting layer, depositing a TiTa pasting layer on the interior portion of the deposition chamber by sputtering a TiTa target; after depositing the TiTa pasting layer, sputtering magnesium in a flow of oxygen gas to deposit a MgO pasting layer on at least the interior portion of the deposition chamber; and after depositing the MgO pasting layer on at least the interior portion of the deposition chamber, depositing a second layer on a wafer within the deposition chamber, wherein the second layer comprises at least one of MgO and Mg.