Fluctuation-Induced First-Order Transition of an Isotropic System to a Periodic State
- 7 November 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 61 (19) , 2229-2232
- https://doi.org/10.1103/physrevlett.61.2229
Abstract
Small-angle neutron-scattering data, obtained from a near-symmetric isotropic diblock copolymer, demonstrate non-mean-field behavior over a wide temperature range (≥ 57°C) above the weakly first-order microphase-separation transition. These results are quantitatively explained by a fluctuation theory based on the Hartree approximation employed by Brazovskii to describe such phase transitions.Keywords
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