Neutron powder diffraction studies of the La0.65Pb0.35MnO3 perovskite

Camelia N. Borca, S. Adenwalla, S. H. Liou, Q. L. Xu, J. L. Robertson, P. A. Dowben

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4 Scopus citations

Abstract

The structure of La0.65Pb0.35MnO3 has been studied by neutron powder diffraction. From the temperature dependence of the lattice parameters, we observe that La0.65Pb0.35MnO3 remains single phase in the temperature interval from 25 to 400 K, with a rhombohedral (R3̄c) structure. The collinear Mn spins suffer a thermally driven reorientation transition close to the Curie temperature, as obtained from powder samples (using neutron diffraction) and from thin films [using ferromagnetic resonance (FMR)]. The reorientation transition may indicate the presence of local Jahn-Teller (JT) lattice distortions, which are prevented from developing with long-range order in the R3̄c crystal structure.

Original languageEnglish (US)
Pages (from-to)325-329
Number of pages5
JournalMaterials Letters
Volume57
Issue number2
DOIs
StatePublished - Dec 1 2002

Keywords

  • Crystal structure
  • Ferromagnetic resonance
  • Jahn-Teller distortions
  • Neutron diffraction
  • Perovskites
  • Spin reorientation transition

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Borca, C. N., Adenwalla, S., Liou, S. H., Xu, Q. L., Robertson, J. L., & Dowben, P. A. (2002). Neutron powder diffraction studies of the La0.65Pb0.35MnO3 perovskite. Materials Letters, 57(2), 325-329. https://doi.org/10.1016/S0167-577X(02)00785-1