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Mössbauer and X-ray diffraction study of structural phase transitions in LaMnO3 + δ

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

The influence of the conditions of thermal treatment on the formation and mutual transitions of structural modifications of the LaMnO3 + δ compound doped with 57Fe (4%) have been investigated by Mössbauer spectroscopy and X-ray diffraction analysis. It is found that heat treatment in vacuum and in air ensures reversible structural transformations of two orthorhombic and one rhombohedral phases (space groups Pnma and \(R\bar 3c\), respectively). Changes in the configuration of the oxygen environment of cations at reversible phase transitions are considered.

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Authors and Affiliations

  1. Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia

    V. D. Sedykh, V. Sh. Shekhtman, I. I. Zver’kova, A. V. Dubovitskii & V. I. Kulakov

Authors
  1. V. D. Sedykh
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  2. V. Sh. Shekhtman
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  3. I. I. Zver’kova
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  4. A. V. Dubovitskii
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  5. V. I. Kulakov
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Corresponding author

Correspondence to V. D. Sedykh.

Additional information

Original Russian Text © V.D. Sedykh, V.Sh. Shekhtman, I.I. Zver’kova, A.V. Dubovitskii, V.I. Kulakov, 2007, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2007, Vol. 71, No. 9, pp. 1285–1288.

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Sedykh, V.D., Shekhtman, V.S., Zver’kova, I.I. et al. Mössbauer and X-ray diffraction study of structural phase transitions in LaMnO3 + δ . Bull. Russ. Acad. Sci. Phys. 71, 1249–1252 (2007). https://doi.org/10.3103/S1062873807090122

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  • DOI: https://doi.org/10.3103/S1062873807090122

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