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Conference papers

High Temperature Phase Transition Studies and Dielectric Properties of Sr2SbMnO6

Abstract : Sr2SbMnO6 (SSMO) ceramics were, fabricated using the nanocrystalline powders obtained via molten salt synthesis (MSS) method. High temperature X-ray diffraction studies confirmed the structural phase transition (room temperature tetragonal (I4/mcm) to the cubic phase (Pm-3m)) temperature to be around 736K. The discontinuity in the phase transition indicated its first order nature reflecting the presence of ferroelectric-like distortions in SSMO prepared from MSS which seemed to be unique as it was not observed so far in the case of SSMO prepared using solid-state reaction method. The dielectric behavior of SSMO was studied in the 300-950 K temperature range at high frequencies (MHz range) in order to suppress the of space charge and related effects that dominate at such higher temperatures and mask the real phase transition.
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K. R. S. Preethi Meher, P.-E. Janolin, Nicolas Guiblin, Gadige Paramesh, K. B. R. Varma. High Temperature Phase Transition Studies and Dielectric Properties of Sr2SbMnO6. 56th DAE-Solid State Physics Symposium (SSPS), Dec 2011, SRM Univ, Kattankulathur, India. ⟨10.1063/1.4709919⟩. ⟨hal-02186460⟩



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