Critical behaviour and the order parameter saturation in uniaxial ferroelectrics with the polar axes in and out of a crystallographic direction / M. Gałązka, P. Zieliński, [et al.] // Phase Transitions ... więcej

Critical behaviour and the order parameter saturation in uniaxial ferroelectrics with the polar axes in and out of a crystallographic direction / M. Gałązka, P. Zieliński, [et al.] // Phase Transitions [Dokument elektroniczny]. – 2010, vol. 83, iss. 10-11, s. 768-781 : rys. – Tryb dostępu: https://www.tandfonline.com/doi/full/10.1080/01411594.2010.509046. – Bibliogr. 31 poz., Abstr. – Mat. konf.: 19th Czech-Polish Conference on Structural and Ferroelectric Phase Transitions, Moravia, Czech Republic, 24-28.05.2010. – doi: 10.1080/01411594.2010.509046. – ISSN 0141-1594

The equations of state for two uniaxial systems: the first with the polar direction identical with one of the crystallographic axes and the second with the polar direction within a crystallographic plane ... więcej

The equations of state for two uniaxial systems: the first with the polar direction identical with one of the crystallographic axes and the second with the polar direction within a crystallographic plane giving a realistic Curie–Weiss constant ratio and the experimentally obtained non-classical critical exponents are used to describe the behaviours of spontaneous polarization and of the susceptibility. The theories are exemplified by the behaviour of molecular-ionic crystals (CH3NH3)5Bi2Cl11 (MAPCB), (CH3NH3)5Bi2Br11 (MAPBB) and (C3N2H5)5Bi2Br11 (IBB).