| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1490903 | Materials Research Bulletin | 2010 | 5 Pages |
Abstract
We have synthesized the double-layer Aurivillius phase Bi2LnNbTiO9 where Ln = Nd–Gd, Bi. All compounds adopt the orthorhombic polar space group A21am. 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 Ln do not order down to 5 K.
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Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
A.B. Missyul, I.A. Zvereva, T.T.M. Palstra, A.I. Kurbakov,