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Critical behavior of La0.67−y (Sr, Ba, Ca)0.33+y Mn1−x Sn x O3 (x=0.0l, 0.02, y=0, 0.07) perovskites

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ICAME 2005

Abstract

The magnetic critical behavior of the manganese perovskite series La0.67−y (Sr, Ba, Ca)0.33+y Mn1−x SnxO3 (x=0.0l, 0.02, y=0, 0.07) is studied by means of de magnetic measurements and 119Sn Mössbauer spectroscopy. The structure can be described by a rhombohedral unit cell (space group R-3C) for the samples where the A-site is occupied by La and Sr or La and Ba ions and orthorhombic unit cell (space group Pnma) for the samples where the A-site is occupied by La and Ca ions. Arrott and scaling plots show that the samples, where the A-site is occupied by La and Sr or La and Ba ions, follow the behavior of a conventional second-order ferromagnetic transition. In contrast, the samples that contain La and Ca ions in the A-site show anomalous behavior around Curie point. Mössbauer measurements show two magnetic phases below T c . One of them exhibits stronger exchange interactions with more rapid electron transfer between Mn3+/Mn4+, compared to the other.

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Author information

Authors and Affiliations

  1. Physics Department, University of loannina, P.O. Box 1186, 451 10, loannina, Greece

    H. Assaridis, A. Moukarika, V. Papaefthymiou & T. Bakas

  2. Department of Materials Science and Technology, University of loannina, P.O. Box 1186, 451 10, loannina, Greece

    I. Panagiotopoulos

Authors
  1. H. Assaridis
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  2. I. Panagiotopoulos
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  3. A. Moukarika
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  4. V. Papaefthymiou
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  5. T. Bakas
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Corresponding author

Correspondence to T. Bakas .

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Editors and Affiliations

  1. Université Montpellier II — CNRS, Montpellier, France

    P.-E. Lippens  & J.-C. Jumas  & 

  2. Uiversité Henri Poincaré-Nancy I, Villers-lès-Nancy, France

    J.-M. R. Génin

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Assaridis, H., Panagiotopoulos, I., Moukarika, A., Papaefthymiou, V., Bakas, T. (2006). Critical behavior of La0.67−y (Sr, Ba, Ca)0.33+y Mn1−x Sn x O3 (x=0.0l, 0.02, y=0, 0.07) perovskites. In: Lippens, PE., Jumas, JC., Génin, JM.R. (eds) ICAME 2005. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-49853-7_105

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  • DOI: https://doi.org/10.1007/978-3-540-49853-7_105

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-49852-0

  • Online ISBN: 978-3-540-49853-7

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