Finite-temperature properties of multiferroic BiFeO3 - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review Letters Année : 2007

Finite-temperature properties of multiferroic BiFeO3

Résumé

An effective Hamiltonian scheme is developed to study finite-temperature properties of multiferroic BiFeO3. This approach reproduces very well (i)the symmetry of the ground state, (ii)the Néel and Curie temperatures, and (iii)the intrinsic magnetoelectric coefficients (that are very weak). This scheme also predicts (a)an overlooked phase above TC 1100K that is associated with antiferrodistortive motions, as consistent with our additional x-ray diffractions, (b)improperlike dielectric features above TC, and (c)that the ferroelectric transition is of first order with no group-subgroup relation between the paraelectric and polar phases. © 2007 The American Physical Society.
Fichier non déposé

Dates et versions

hal-02269773 , version 1 (23-08-2019)

Identifiants

Citer

I.A. Kornev, S. Lisenkov, R. Haumont, B. Dkhil, L. Bellaiche. Finite-temperature properties of multiferroic BiFeO3. Physical Review Letters, 2007, 99 (22), pp.227602. ⟨10.1103/PhysRevLett.99.227602⟩. ⟨hal-02269773⟩
39 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More