Condensed Matter Physics, 1996, No 8, p. 69-74, English
Modulated structures of order parameter are considered as an important necessary element of phase transitions. Stable modulated structures are a result of the competition among several high gradient terms. There are two phases of modulated structures which have different level of spontaneous symmetry breaking for the parity group. At the transition point between these phases the space distribution of the order parameter is similar to that of bell-soliton. Thermodynamic potential is evaluated in the vicinity of this point.Comments: Refs. 3, Tabs. 0, Figs. 6.
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