• De-stabilization of charge-order state through in-homogeneity in random ionic distribution in the particles of polycrystalline Eu$_{0.2}$La$_{0.3}$Sr$_{0.2}$Ca$_{0.3}$MnO$_3$ sample

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      https://www.ias.ac.in/article/fulltext/boms/043/0112

    • Keywords

       

      Charge order; in-homogeneity; structural strain.

    • Abstract

       

      In this study the perovskite manganite Eu$_{0.2}$La$_{0.3}$Sr$_{0.2}$Ca$_{0.3}$MnO$_{3}$ batch integrated sample is studied, with special modification done to introduce localized structural strain without micro-level (grains) modification. This consequence successfully generates opposite nature of high orthorhombic strain along b-axis in these samples, although the general structure is same for both with $Pnma$ space group. The sharp magnetic transitions (both Curie temperature and charge-ordertransition) are reported to be mixed in presence of random ionic distribution in its structure. The diffused insulator-metal behaviour, de-stabilization of magnetic state and phase transitions associated with inherent anisotropic strain is discussed and is explained based on chemical disorder-induced structural strain in the present system.

    • Author Affiliations

       

      K DE1 P DHAK2 S DE3 P DUTTA4 K DEY4 S MUKHERJEE5 S CHATTERJEE3 S DAS6

      1. The Neotia University, D.H. Road, 24 Pgs (south), Sarisa 743 368, India
      2. Department of Chemistry, Center for Materials Science and Nanotechnology, 0351 Oslo, Norway
      3. UGC-DAE Consortium for Scientific Research, Kolkata Centre, Kolkata 700 098, India
      4. Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur 700 032, India
      5. UGC-DAE Consortium for Scientific Research, Mumbai Centre, BARC Campus, Mumbai 400085, India
      6. Department of Electronics and Communication Engineering, Guru Ghasidas Central University, Bilaspur, C.G. 495 009, India
    • Dates

       
  • Bulletin of Materials Science | News

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