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Issue 43, 2014
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Superspace application on magnetic structure analysis of the Pb2MnWO6 double perovskite system

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Abstract

The commensurate crystal structure of the magnetic phase occurring below 7 K of the multiferroic Pb2MnWO6 perovskite has been solved by the introduction of the superspace approach. This lead based double perovskite is characterized by a complex ferrielectric non-centrosymmetric nuclear structure with orthorhombic symmetry stable in a wide temperature range. As indicated from the analysis of powder neutron diffraction data, the low temperature antiferromagnetic structure showing a propagation vector κ = [1/4 0 0] is stabilized by a multi-step process involving the evolution from incommensurate to commensurate spin ordering with a concomitant change of the magnetic symmetry. The determination of the Pb2MnWO6 magnetic structure offers a meaningful example of the superspace application and provides a detailed phase diagram of the involved magnetic states. Nowadays this ordered perovskite could be considered as a new type of multiferroic material combining ferrielectric properties and a long period antiferromagnetic structure.

Graphical abstract: Superspace application on magnetic structure analysis of the Pb2MnWO6 double perovskite system

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Publication details

The article was received on 04 Jul 2014, accepted on 07 Sep 2014 and first published on 10 Sep 2014


Article type: Paper
DOI: 10.1039/C4TC01450B
Citation: J. Mater. Chem. C, 2014,2, 9215-9223
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    Superspace application on magnetic structure analysis of the Pb2MnWO6 double perovskite system

    F. Orlandi, L. Righi, C. Ritter, C. Pernechele, M. Solzi, R. Cabassi, F. Bolzoni and G. Calestani, J. Mater. Chem. C, 2014, 2, 9215
    DOI: 10.1039/C4TC01450B

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