1. Burlington Labs, Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7916, United States of America
2. Sumitomo Metal Industries, Limited, Research and Development Center, Sitix Division, Saga 849-0597, Japan
3. International Sematech Incorporated, Austin, Texas 78741‐6499, United States of America
4. Sematech Incorporated, Austin, Texas 78741-6499, United States of America