Redetermination of the crystal structure of RhPb from single-crystal X-ray diffraction data, revealing a rhodium deficiency.

RhPb (rhodium dilead) is a superconductor crystallizing in the CuAl structure type (space group 4/). The Rh and Pb atoms are located at the 4 (site symmetry 422) and 8 (.2) sites, respectively.

Large Magnetovolume Effect Induced by Embedding Ferromagnetic Clusters into Antiferromagnetic Matrix of Cobaltite Perovskite.

Materials that show negative thermal expansion (NTE) have significant industrial merit because they can be used to fabricate composites whose dimensions remain invariant upon heating. In some materials, NTE is concomitant with the spontaneous magnetization due to the magnetovolume effect (MVE). Here the authors report a new class of MVE material; namely, a layered perovskite PrBaCo O (0 ≤ x ≤ 0.