Temat: 64.10.+h - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Nonclassical Critical Behaviour and Low Temperature Anomalies in Ferroelectric DMACA as Described by Many-Sublattice Model
Autorzy:: Gałązka, M.
Zieliński, P.
Powiązania:: https://bibliotekanauki.pl/articles/1399033.pdf
Data publikacji:: 2013-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 64.10.+h
64.60.-i
64.60.Cn
Opis:: A model based on the crystallographic data on dimethylammonium nonachlorodiantimonate (DMACA) is constructed. Gradual orientational ordering of three inequivalent sublattices of the dimethylammonium cations is shown to be at the origin of the anomalous behaviour of the spontaneous polarisation in this material. A quantitative comparison with the experimental data reveals a temperature dependence of a coupling between two sublattices and a strong deformability of the underlying structure.
Źródło:: Acta Physica Polonica A; 2013, 124, 6; 1013-1019
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Study of Order Parameters Coupling in Uniaxial Ferroelectrics on the Basis of Pyroelectric and Dilatometric Measurements
Autorzy:: Gałązka, M.
Zieliński, P.
Powiązania:: https://bibliotekanauki.pl/articles/1538260.pdf
Data publikacji:: 2010-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 64.10.+h
64.60.Bd
62.20.dq
Opis:: A method is devised of extracting the explicit form of the coupling between the primary and secondary order parameters with the use of experimental data and respecting classical and non-classical values of the effective critical exponents. The corresponding equation of state stems from the Ising model on a compressible lattice treated within the mean field approximation supplemented with terms ascertaining scaling invariance in the vicinity of the critical point. The theory is exemplified by the molecular ferroelectric crystals ($CH_{3}NH_{3})_{5}Bi_{2}Cl_{11}$ (MAPCB) and ($CH_{3}NH_{3})_{5}Bi_{2}Br_{11}$ (MAPBB).
Źródło:: Acta Physica Polonica A; 2010, 117, 4; 566-569
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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