Samenvatting
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.
Originele taal-2 | English |
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Pagina's (van-tot) | 546-550 |
Aantal pagina's | 5 |
Tijdschrift | Materials Research Bulletin |
Volume | 45 |
Nummer van het tijdschrift | 5 |
DOI's | |
Status | Published - mei-2010 |