Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi

Landau Model for Commensurate-Commensurate Phase Transitions in Uniaxial Improper Ferroelectric Crystals (CROSBI ID 88429)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Latković, Mladen ; Bjeliš, Aleksa ; Dananić, Vladimir Landau Model for Commensurate-Commensurate Phase Transitions in Uniaxial Improper Ferroelectric Crystals // Journal of physics. Condensed matter, 12 (2000), 19; L293-L302-x

Podaci o odgovornosti

Latković, Mladen ; Bjeliš, Aleksa ; Dananić, Vladimir

engleski

Landau Model for Commensurate-Commensurate Phase Transitions in Uniaxial Improper Ferroelectric Crystals

We propose the Landau model for lock-in phase transitions in uniaxially modulated improper ferroelectric incommensurate-commensurate systems of class I. It includes Umklapp terms of third and fourth order and secondary order parameter representing the local polarization. The corresponding phase diagram has the structure of harmless staircase, with the allowed wave numbers obeying the Farey tree algorithm. Among the stable commensurate phases only those with periods equal to odd number of lattice constants have finite macroscopic polarizations. These results are in excellent agreement with experimental findings in some A_2BX_4 compounds.

Landau model; A_2BX_4 compounds; phase transitions; improper ferroelectrics

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

12 (19)

2000.

L293-L302-x

objavljeno

0953-8984

Povezanost rada

Fizika

Indeksiranost