New view of the high-pressure behaviour of GdFeO(3)-type perovskites.

  title={New view of the high-pressure behaviour of GdFeO(3)-type perovskites.},
  author={Jing Zhao and Nancy L. Ross and Ross J Angel},
  journal={Acta crystallographica. Section B, Structural science},
  volume={60 Pt 3},
Recent determinations of the structures of several GdFeO(3)-type orthorhombic perovskites (ABO(3)) show that the octahedra in some become more tilted with increasing pressure. In others the octahedra become less tilted and the structure evolves towards a higher-symmetry configuration. This variety of behaviour can be explained in terms of the relative compressibilities of the octahedral and dodecahedral cation sites in the perovskite structure. If the BO(6) octahedra are less compressible than… CONTINUE READING

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