Author Affiliations

R. Messier,^1,*) K. Vedam,¹ Y. Cong,¹ W.A. Yarbrough,¹ and P.K. Bachmann^1,+)

¹Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802, Tel. (814) 865 3704

^*)also with the Department of Engineering Science and Mechanics

⁺⁾permanent address: Philips Research Laboratories, P.O.Box 1980, D-5100 Aachen, West Germany