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

✍ Scribed by D.N. Argyriou; D.G. Hinks; J.F. Mitchell; C.D. Potter; A.J. Schultz; D.M. Young; J.D. Jorgensen; S.D. Bader

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
223 KB
Volume
124
Category
Article
ISSN
0022-4596

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✦ Synopsis

Using both powder and single crystal neutron diffraction we have determined the room temperature structure of Pr 0.5 Sr 0.5 MnO 3 from melt-grown crystalline material. Contrary to previous measurements on polycrystalline samples we find the room temperature structure of Pr 0.5 Sr 0.5 MnO 3 is tetragonal, space group F4/mmc (a ‫؍‬ 7.64093(5) A ˚, c ‫؍‬ 7.79104(8) A ˚). The structure of Pr 0.5 Sr 0.5 MnO 3 is related to the ideal primitive cubic perovskite structure by a single correlated rotation of MnO 6 octahedra about the c axis. We find that MnO 6 octahedra exhibit a small Jahn-Teller distortion (⌬(Mn-O) Θ‚ 0.02 A ˚).

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