Helical bunching and symmetry lowering inducing multiferroicity in Fe langasites - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Physical Review B Année : 2016

Helical bunching and symmetry lowering inducing multiferroicity in Fe langasites

Rafik Ballou
Sophie de Brion
Eric Ressouche
Claire Colin
A. Zorko
Valerio Scagnoli
  • Fonction : Auteur
  • PersonId : 954207
Joël Balay
  • Fonction : Auteur
Virginie Simonet

Résumé

The chiral Fe-based langasites represent model systems of triangle-based frustrated magnets with a strong potential for multiferroicity. We report neutron scattering measurements for the multichiral Ba3MFe3Si2O14 (M = Nb, Ta) langasites revealing new important features of the magnetic order of these systems: the bunching of the helical modulation along the c-axis and the in-plane distortion of the 120° Fe-spin arrangement. We discuss these subtle features in terms of the microscopic spin Hamiltonian, and provide the link to the magnetically-induced electric polarization observed in these systems. Thus, our findings put the multiferroicity of this attractive family of materials on solid ground.
Fichier principal
Vignette du fichier
PRB_SATELLITES.pdf (2.64 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01163057 , version 1 (20-06-2015)
hal-01163057 , version 2 (02-06-2016)

Identifiants

Citer

Laura Chaix, Rafik Ballou, Andres Cano, Sylvain Petit, Sophie de Brion, et al.. Helical bunching and symmetry lowering inducing multiferroicity in Fe langasites. Physical Review B, 2016, 93 (21), pp.214419. ⟨10.1103/PhysRevB.93.214419⟩. ⟨hal-01163057v2⟩
436 Consultations
233 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More