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Issue 2, 2011
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Cation ordering within the perovskite block of a six-layer Ruddlesden-Popper oxide from layer-by-layer growth – artificial interfaces in complex unit cells

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Abstract

The (AO)(ABO3)n Ruddlesden-Popper structure is an archetypal complex oxide consisting of two distinct structural units, an (AO) rock salt layer separating an n-octahedra thick perovskite block. Conventional high-temperature oxide synthesis methods cannot access members with n > 3, but low-temperature layer-by-layer thin film methods allow the preparation of materials with thicker perovskite blocks, exploiting high surface mobility and lattice matching with the substrate. This paper describes the growth of an n = 6 member CaO[(CSMO)2(LCMO)2 (CSMO)2] in which the six unit cell perovskite block is sub-divided into two central La0.67Ca0.33MnO3 (LCMO) and two terminal Ca0.85Sm0.15MnO3 (CSMO) layers to allow stabilization of the rock salt layer and variation of the transition metal charge.

Graphical abstract: Cation ordering within the perovskite block of a six-layer Ruddlesden-Popper oxide from layer-by-layer growth – artificial interfaces in complex unit cells

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Publication details

The article was received on 12 Sep 2010, accepted on 01 Oct 2010 and first published on 05 Nov 2010


Article type: Edge Article
DOI: 10.1039/C0SC00482K
Citation: Chem. Sci., 2011,2, 261-272
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    Cation ordering within the perovskite block of a six-layer Ruddlesden-Popper oxide from layer-by-layer growth – artificial interfaces in complex unit cells

    L. Yan, H. J. Niu, Giap. V. Duong, M. R. Suchomel, J. Bacsa, P. R. Chalker, J. Hadermann, G. van Tendeloo and M. J. Rosseinsky, Chem. Sci., 2011, 2, 261
    DOI: 10.1039/C0SC00482K

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