A coarse-grained model for a [Cu.sub.3]Au system undergoing an order-disorder transition
Above the bulk order-disorder transition temperature (Todt) of symmetric polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA), the mismatching of film thickness and bulk periodicity result in the hierarchical formation, ranging from spinodal morphology to islands/holes [2, 17].
The order-disorder transition temperature ([T.sub.ODT]) can be evaluated from 13]
Mossmer et al., "Order-disorder transition in surface-induced nanopattern of diblock copolymer films," Macromolecules, vol.
: 'Crystal Statistics I: A Two-Dimensional Model with an Order-Disorder Transition
', Physical Review, 65, pp.
The thermodynamics of domain formation (the order-disorder transition
), the role of the domains as quasi-reinforcing fillers, the effects of composition on morphology and properties, and the effects of inter-chain entanglements are among the topics still being studied (ref.
Block copolymers undergo an order-disorder transition (ref.
The order-disorder transition is thermodynamic in nature which is controlled by physical factors; energetics and entropy.
It would be a useful application of AES if the lineshape can be correlated to surface structural changes, either to order-order or to order-disorder transitions
. This is the main issue of this work.
Zheludev, "Coherent and incoherent metamaterials and order-disorder transitions
Finally, one should note that a great variety of magnetic materials including halides, metals, oxides, intermetallics, and sulphides exhibit anomalies in their elastic properties due to the fact that order-disorder transitions
are typically accompanied by small lattice distortions .