Nanodomains in multiferroic hexagonal RMnO3 films (R = Y,Dy,Ho,Er) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2009

Nanodomains in multiferroic hexagonal RMnO3 films (R = Y,Dy,Ho,Er)

T. Kordel
  • Fonction : Auteur
C. Wehrenfennig
  • Fonction : Auteur
D. Meier
  • Fonction : Auteur
T. Lottermoser
  • Fonction : Auteur
I. Gelard
J. W.; Kim
  • Fonction : Auteur
K. Dorr
  • Fonction : Auteur

Résumé

A homogeneous distribution of ferroelectric nanoinclusions was observed by optical second harmonic generation in epitaxial films of hexagonal RMnO3 (R = Y, Dy, Ho, Er) grown on ZrO2(Y2O3) substrates. The inclusions correspond to secondary orientations in the c-axis-oriented films. Their volume density is in the range of 10(-3) and their occurrence is independent of growth technique and film thickness in the range of 20-1000 nm. The inclusions behave as preferentially polarized ferroelectric nanodomains whereas the epitaxial film is in a ferroelectric single-domain state. In addition, the antiferromagnetic phase exhibits nanodomains of < 100 nm which is three orders of magnitude below the extension of bulk antiferromagnetic domains in RMnO3. Indications for a polarization-induced magnetic order different from that of the bulk are discussed.

Domaines

Matériaux
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Dates et versions

hal-01067726 , version 1 (24-09-2014)

Identifiants

Citer

T. Kordel, C. Wehrenfennig, D. Meier, T. Lottermoser, M. Fiebig, et al.. Nanodomains in multiferroic hexagonal RMnO3 films (R = Y,Dy,Ho,Er). Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2009, 80 (4), pp.045409. ⟨10.1103/PhysRevB.80.045409⟩. ⟨hal-01067726⟩

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