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Ferro-and antiferromagnetic ordering in LaMnO3+δ

  • Magnetism and Ferroelectricity
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Abstract

A neutron diffraction study of the crystalline structure and magnetic state of LaMnO3+δ samples with different deviations from oxygen stoichiometry has been made at 4.2 K. It is shown that annealing at reduced oxygen pressure is accompanied by transformation of the magnetic structure from ferromagnetic, with magnetic moments parallel to the b axis, to antiferromagnetic, with the wave vector k=0 and the moments along the a axis (space group Pnma). A comparison of experimental with expected Mn ion moments suggests that magnetic order does not extend throughout the sample volume. Part of the Mn ions form magnetic clusters ∼20 Å in size.

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Authors and Affiliations

  1. Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, 620219, Ekaterinburg, Russia

    A. N. Pirogov, A. E. Teplykh, V. I. Voronin & A. E. Kar'kin

  2. Joint Institute for Nuclear Research, 141980, Dubna, Russia

    A. M. Balagurov, V. Yu. Pomyakushin & V. V. Sikolenko

  3. Ural State University, 620083, Ekaterinburg, Russia

    A. N. Petrov, V. A. Cherepanov & E. A. Filonova

Authors
  1. A. N. Pirogov
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  2. A. E. Teplykh
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  3. V. I. Voronin
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  4. A. E. Kar'kin
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  5. A. M. Balagurov
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  6. V. Yu. Pomyakushin
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  7. V. V. Sikolenko
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  8. A. N. Petrov
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  9. V. A. Cherepanov
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  10. E. A. Filonova
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Additional information

Fiz. Tverd. Tela (St. Petersburg) 41, 103–109 (January 1999)

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Pirogov, A.N., Teplykh, A.E., Voronin, V.I. et al. Ferro-and antiferromagnetic ordering in LaMnO3+δ . Phys. Solid State 41, 91–96 (1999). https://doi.org/10.1134/1.1130735

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  • DOI: https://doi.org/10.1134/1.1130735

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