02434nas a2200277 4500008004100000022001400041245009900055210006900154260000900223300001600232490000700248520153700255653000801792653002401800653001401824653002901838653002301867653002601890100001801916700001801934700001801952700001801970700001801988700001902006856013102025 2020 eng d a0272-884200aCorrelation between multifunctional properties of lead free Iron doped BCT perovskite ceramics0 aCorrelation between multifunctional properties of lead free Iron cAUG  a17495-175070 v463 a

Present study investigates the effect of Fe doping on structural, microstructural, dielectric, ferroelectric, piezoelectric and magnetic properties of Barium calcium titanate (BCT) ceramics synthesized by solid state reaction route. The polycrystalline tetragonal structure of prepared ceramics was confirmed from XRD study. Analysis done using Rietveld refinement reveals reduction in lattice parameters as well as unit cell volume on substitution of Fe3+ ions in BCT lattice. Occurrence of four distinct Raman bands viz. 297 cm(-1) -302 cm(-1), 473 cm(-1)-475 cm(-1), 516 cm(-1) -524 cm(-1) and 729 cm(-1) -733 cm(-1) in Raman spectroscopic studies confirms the tetragonal phase of prepared ceramic compositions which are in accordance with XRD study. The Scanning Electron Microscopy analysis revealed polyhedral shaped grains whose average grain size decreased with increase in Fe content (x) in BCT ceramics. A diffused frequency independent phase transition was observed in temperature dependent dielectric measurements. Dielectric properties improved significantly, with shifting of transition temperature, T c close to room temperature with Fe doping. These studiessuggest applications of these ceramics in the development of environment friendly dielectric materials meeting X7R MLCCs specifications. The ferroelectric and piezoelectric properties of these ceramic compositions were found to decrease with increase in Fe concentration. Feeble room temperature ferromagnetism was observed for composition x = 0.020.

10aBCT10adielectric response10aFe doping10aferroelectric properties10aLead free ceramics10aMagnetic measurements1 aRedhu, Preeti1 aPunia, Rajesh1 aHooda, Ashima1 aMalik, B., P.1 aSharma, Geeta1 aSharma, Preeti uhttps://library.ncl.res.in/content/correlation-between-multifunctional-properties-lead-free-iron-doped-bct-perovskite-ceramics