Multilayered materials having mesoscopic and nanoscale
structures indicate many attractive characteristics
in mechanical, magnetic, super-conducting and photonic
properties [l]. In mechanical properties, it is well
known that these materials, produced by sputtering,
evaporation or electrodeposition show high strength
and abnormal high elastic modulus [2]. The multilayers
produced by such a crystal growth method, however,
have generally been prepared in the form of thin films.
The bulk materials with nano-scale structure are desirable
from an industrial point of view. We have developed
a fabrication method to produce ‘super-laminates’
with nano-scale layers using the mechanical process of
foil stacking and repeated rolling after diffusion bonding
[3].
In