The Room Temperature Crystal Structure of the Perovskite Pr0.5Sr0.5MnO3

Using both powder and single crystal neutron diffraction we have determined the room temperature structure of Pr0.5Sr0.5MnO3from melt-grown crystalline material. Contrary to previous measurements on polycrystalline samples we find the room temperature structure of Pr0.5Sr0.5MnO3is tetragonal, space...

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Bibliographic Details
Published in:Journal of solid state chemistry 1996-07, Vol.124 (2), p.381-384
Main Authors: Argyriou, D.N., Hinks, D.G., Mitchell, J.F., Potter, C.D., Schultz, A.J., Young, D.M., Jorgensen, J.D., Bader, S.D.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Inorganic compounds
Physics
Salts
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
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Summary:Using both powder and single crystal neutron diffraction we have determined the room temperature structure of Pr0.5Sr0.5MnO3from melt-grown crystalline material. Contrary to previous measurements on polycrystalline samples we find the room temperature structure of Pr0.5Sr0.5MnO3is tetragonal, space groupF4/mmc(a= 7.64093(5) Å,c= 7.79104(8) Å). The structure of Pr0.5Sr0.5MnO3is related to the ideal primitive cubic perovskite structure by a single correlated rotation of MnO6octahedra about thecaxis. We find that MnO6octahedra exhibit a small Jahn–Teller distortion (Δ(Mn–O) ≈ 0.02 Å).
ISSN:0022-4596
1095-726X
DOI:10.1006/jssc.1996.0253