Structural distortions in the paramagnetic insulating phase of La0.7Ca0.3MnO3

C. S. Nelson, Y. J. Kim, J. P. Hill, Doon Gibbs, V. Kiryukhin, T. Y. Koo, S. W. Cheong

Research output: Contribution to journalConference articlepeer-review

Abstract

We report x-ray scattering studies of polarons and tilt ordering in the high-temperature, paramagnetic insulating phase of La0.7Ca0.3MnO3. The temperature dependence of scattering due to individual and correlated polarons was measured, and the latter was found to disappear at ∼400 K. The scattering due to tilt ordering, which was observed by tuning the incident photon energy near the La L1 edge, was also measured as a function of temperature. The destruction of tilt ordering at ∼690 K is believed to be associated with the orthorhombic-rhombohedral structural transition.

Original languageEnglish (US)
Pages (from-to)EE7.3.1-EE7.3.8
JournalMaterials Research Society Symposium - Proceedings
Volume678
DOIs
StatePublished - 2001
Externally publishedYes
EventApplications of Synchrotron Radiation Techniques to Materials Science VI - San Francisco, CA, United States
Duration: Apr 16 2001Apr 20 2001

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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