RT Journal Article
T1 The incommensurately modulated structures of the perovskites NaCeMnWO6 and NaPrMnWO6
A1 García Martín, Susana
A1 King, Graham
A1 Nénert, Gwilherm
A1 Ritter, Clemens
A1 Woodward, Patrick
AB The structures of the doubly ordered perovskites NaCeMnWO 6 and NaPrMnWO 6 , with rock salt ordering of the Mn 2+ and W6+ B-site cations and layered ordering of the Na + and (Ce 3+ /Pr 3+) A-site cations, have been studied by transmission electron microscopy, electron diffraction, neutron and synchrotron X-ray powder diffraction. Both compounds possess incommensurately modulated crystal structures. In NaCeMnWO 6 the modulation vector (with reference to the ideal ABX3 perovskite subcell) is q ≈ 0.067a* (∼58.7 Å) and in NaPrMnWO6 q ≈ 0.046a* (∼85.3 Å). In both compounds the superstructures are primarily the two-dimensional chessboard type, although some crystals of NaCeMnWO 6 were found with one-dimensional stripes. In some crystals of NaPrMnWO6 there is a coexistence of chessboards and stripes. Modeling of neutron diffraction data shows that octahedral tilting plays an important role in the structural modulation
PB ACS Publications
YR 2012
FD 2012-03-02
LK https://hdl.handle.net/20.500.14352/130435
UL https://hdl.handle.net/20.500.14352/130435
LA eng
NO The Incommensurately Modulated Structures of the Perovskites NaCeMnWO6 and NaPrMnWO6 Susana García-Martín, Graham King, Gwilherm Nénert, C. Ritter, and Patrick M. Woodward Inorganic Chemistry 2012 51 (7), 4007-4014 DOI: 10.1021/ic202071n
NO Comunidad de Madrid
NO Ministerio de Ciencia, Innovación y Universidades
DS Docta Complutense
RD 20 mar 2026