Patent ID: 6521107
Filing Date: 2003-02-18
Classification: C23C,H01J

Abstract:
A target adapted to be received by a DC_magnetron PVD system wherein said target has a deposition-producing portion composed primarily of a magnetically and electrically conductive, to-be-deposited metal, which metal has a tendency to form polycrystals of face-centered cubic structure, including <200>, <111>, <113> and <220> textured polycrystals, and said deposition-producing portion of the target is further characterized by:(a) a texture mixture having an average value with a predefined per-sample-point restriction of +/âˆ’10% or tighter, wherein said average value for the texture mixture satisfies the Texture Figure of Merit imbalance condition: 211&leq;TFM=12*Power(&LeftAngleBracket;200&RightAngleBracket;,2.5)(&LeftAngleBracket;111&RightAngleBracket;  +  &LeftAngleBracket;113&RightAngleBracket;  +  &LeftAngleBracket;111&RightAngleBracket;&LeftAngleBracket;113&RightAngleBracket;&LeftAngleBracket;220&RightAngleBracket;   /  20)â€ƒwhere Power(a,b) means value a raised to the b_th power and said texture variables in said TFM equation represent respective percentages of content of the correspondingly textured polycrystals.