%0 Journal Article %T Structural, dielectric, ferroelectric and tuning properties of Pb-free ferroelectric Ba0.9Sr0.1Ti1-xSnxO3 %+ Laboratoire de Matière Condensée et Nanostructures (LMCN) %+ Laboratoire de Physique de la Matière Condensée - UR UPJV 2081 (LPMC) %+ Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP) %+ Laboratory of Condensed Matter and Nanostructures %+ Jozef Stefan Institute [Ljubljana] (IJS) %A Zaitouni, H. %A Hajji, L. %A Mezzane, D. %A Choukri, E. %A Gagou, Y. %A Hoummada, K. %A Charai, A. %A Alimoussa, A. %A Rozic, B. %A El Marssi, M. %A Kutnjak, Z. %< avec comité de lecture %@ 0272-8842 %J Ceramics International %I Elsevier %V 46 %N 17 %P 27275-27282 %8 2020 %D 2020 %Z 2011.06897 %R 10.1016/j.ceramint.2020.07.212 %Z Physics [physics]/Condensed Matter [cond-mat]Journal articles %X A series of Pb-free ferroelectric materials Ba0.9Sr0.1Ti1-xSnxO3 (BSTS-x) with 0 <= x <= 0.15 was successfully prepared via solid-state reaction method. The effect of Sn substitution on the crystal structure, microstructure, dielectric behavior, ferroelectric and tunable features of BSTS-x ceramics were systematically investigated. Room temperature (RT) x-ray diffraction (XRD) analysis using the Rietveld refinement method reveals that all the synthesized BSTS-x ceramics were well crystallized into single perovskite structure. The results show a tetragonal phase for 0.00 <= x <= 0.02, which evolves to orthorhombic and tetragonal coexisting phases for 0.05 <= x <= 0.07. The composition x = 0.10 showed a mixture of tetragonal, orthorhombic and rhombohedral phases at RT, while a single cubic phase is observed for x = 0.15. The crystal phases determined by XRD were confirmed by Raman spectroscopy. Enhanced dielectric permittivity with a maximum value of epsilon'similar to 35000 is observed for x = 0.10 at RT. The ferroelectric behavior of BSTS-x ceramics was investigated through polarization hysteresis loops and tunability measurements. High tunability of 63% at RT and under the low DC-applied electric field of 1.40 kV/cm is achieved for x = 0.10. %G English %L hal-03627374 %U https://u-picardie.hal.science/hal-03627374 %~ UNIV-TLN %~ CNRS %~ UNIV-AMU %~ UNIV-PICARDIE %~ IM2NP %~ U-PICARDIE %~ LPMC-UPJV