Crystal structure investigation of double ordered perovskite NaLnCoWO6 (Ln=La, Pr, Nd, Tb, Ho)
This proposal concerns the NaLnCoWO6 compounds, a new family of AA'BB'O6 double layer perovskites. These compounds show potential for multiferroic behavior by their tendency to crystallize in polar space groups. They exhibit rock salt ordering of the B-site cations and layered ordering of the A-site cations. Their structures are highly distorted with a complex rotation pattern of oxygen octahedra and the presence of various superstructures is observed in TEM. To correctly determine the symmetry, the oxygen positions have to be determined precisely. The high resolution NPD will be combined with high-resolution synchrotron measurement (done in September 2016 at Cristal, Soleil) to fully resolve this complex structural problem.
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ZUO Peng; BORDET Pierre; Claire V. Colin; DARIE Celine; KLEIN Holger and SUARD Emmanuelle. (2016). Crystal structure investigation of double ordered perovskite NaLnCoWO6 (Ln=La, Pr, Nd, Tb, Ho). Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-23-693
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