Structural properties of Pb3Mn7O15 determined from high-resolution synchrotron powder diffraction
arXiv:0810.5296 · doi:10.1016/j.jssc.2009.02.001
Abstract
We report on the crystallographic structure of the layered compound Pb3Mn7O15. Previous analysis based on laboratory X-ray data at room temperature gave contradictory results in terms of the description of the unit cell. Motivated by recent magnetic bulk measurements of this system, we re-investigated the chemical structure with high-resolution synchrotron powder diffraction at temperatures between 15 K and 295 K. Our results show that the crystal structure of stoichiometric Pb3Mn7O15 has a pronounced 2-dimensional character and can be described in the orthorhombic space group Pnma.
6 pages, 4 figures, 2 tables