Double-layered Aurivillius-type ferroelectrics with magnetic moments

A. B. Missyul*, I. A. Zvereva, T. T. M. Palstra, A. I. Kurbakov

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

We have synthesized the double-layer Aurivillius phase Bi(2)LnNbTiO(9) where Ln = Nd-Gd, Bi. All compounds adopt the orthorhombic polar space group A2(I)am. The magnetic Ln-ion occupies the cuboctahedral position in the middle of the perovskite double-layer, and thus controls the octahedral tilt of the perovskite block. This tilt modifies the ferroelectric displacement of the (Nb,Ti) towards the octahedral faces. This provides a mechanism to systematically modify the polarization. Mn-substitution on the (Nb.Ti) site for Ln = Bi is homogeneous up to x = 0.2. The magnetic moments of In do not order down to 5 K. (C) 2010 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)546-550
Number of pages5
JournalMaterials Research Bulletin
Volume45
Issue number5
DOIs
Publication statusPublished - May-2010

Keywords

  • Ceramics
  • Chemical synthesis
  • Neutron scattering
  • X-ray diffraction
  • Ferroelectricity

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