Abstract
An enhanced modulus effect has been observed in several composition modulated thin films systems containing short wavelength modulations 0.8–1.0 nm. The foils were produced by vapor deposition using two or three source evaporators. As compared with homogeneous foils of the same average composition, the modulated foils exhibited an appreciable increase (up to 300%) in modulus. The plastic behavior, breaking and microhardness of these foils are also presented as a function of the modulation parameters. Current theories based on electronic and strain effects on the elastic constants of metals are also presented to explain the origin of the supermodulus effect. Interdiffusivities of binary and ternary modulated alloys have been measured from the decay of the x‐ray diffraction satellite intensities produced by the modulation. The stability of concentration waves at various temperatures is also discussed and examples of the determination of spinodal temperatures are given. The effect of loss of coherency and the appearance of screening singularities in the diffusivities are also considered.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
