Spontaneous polarization in the cluster ferroelectric system close to the phase transition point
A two-stage layer by layer integration of the ferroelectric two-particle cluster system partition function functional is made in the quartic basic distribution of the dipole momentum fluctuation approximation. The shape of the layers of integration is determined by peculiarities of fluctuation proc...
Gespeichert in:
| Datum: | 1999 |
|---|---|
| 1. Verfasser: | |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Інститут фізики конденсованих систем НАН України
1999
|
| Schriftenreihe: | Condensed Matter Physics |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/120590 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Spontaneous polarization in the cluster ferroelectric system close to the phase transition point / N.A. Korynevskii // Condensed Matter Physics. — 1999. — Т. 2, № 4(20). — С. 631-641. — Бібліогр.: 10 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | A two-stage layer by layer integration of the ferroelectric two-particle cluster
system partition function functional is made in the quartic basic distribution
of the dipole momentum fluctuation approximation. The shape of the layers
of integration is determined by peculiarities of fluctuation processes (of the
Gaussian and the non-Gaussian types) for separate subsets of collective
variables. The minimization procedure of the partition function functional
unintegrated over one variable (with quasimomentum and Matsubara's frequency equal to zero) gives an equation for the order parameter (i.e., the
spontaneous polarization) of the system. Solutions of this equation at various values of system parameters and external field are found in the Tc
neighbourhood. |
|---|