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7145456 
Journal Article 
Phase formation, microstructure, electrical and magnetic properties of 0.94Bi(0.50)Na(0.50)TiO(3)-0.06Ba(0.85)Ca(0.15)Ti(0.90)Zr(0.10)O(3) ceramics doped with Bi2FeCrO6 prepared via solid-state combustion technique 
Thawong, P; Prasertpalichat, S; Suriwong, T; Pinitsoontorn, S; Mcquade, R; Gupta, SK; Chootin, S; Bongkarn, T; , 
2020 
Yes 
Journal of Materials Science
ISSN: 0022-2461
EISSN: 1573-4803 
SPRINGER 
NEW YORK 
7373-7389 
WOS:000520835700016 
Lead-free 0.94Bi(0.50)Na(0.50)TiO(3)-0.06Ba(0.85)Ca(0.15)Ti(0.90)Zr(0.10)O(3)-xmol%Bi2FeCrO6 ceramics, with x = 0-0.021 (BNT-BCTZ-xBFCO), were calcined at 650 degrees C for 2 h and sintered at 1150 degrees C for 2 h using the solid-state combustion technique. The effect of BFCO content (x) on the phase formation, microstructure, electrical and magnetic properties was studied. The sintered pellets exhibited a pure perovskite phase with the coexistence of rhombohedral (R3c) and tetragonal (P4bm) phases in all the studied compositions. The percentage of R3c increased as x increased from 0 to 0.013, before decreasing, as obtained from the Rietveld refinement analysis (Fullprof). A morphotropic phase boundary of BNT-BCTZ-xBFCO ceramics was observed at x = 0.013, and the ratio between the rhombohedral and tetragonal phases of this composition was 51.0:49.0. The scanning electron microscopy analysis showed polyhedral-shaped grains whose average size increased with increase in the BFCO content (x). The appropriate amount of BFCO doped into BNT-BCTZ ceramics enhanced the electrical, ferroelectric and piezoelectric properties. At optimum doping (x = 0.013), the sample exhibited the highest relative density (98.2%), a high dielectric constant (epsilon(R) = 1572 and epsilon(m) = 5137), maximum remanent polarization (P-r = 42.41 mu C/cm(2)), low coercive field (E-c = 33.57 kV/cm), maximum piezoelectric coefficient (d(33) = 241 pC/N) and the highest normalized strain (d33* = S-max/E-max = 765 pm/V). These improvements to BNT-BCTZ make the ceramic a potential candidate for use in capacitors, sensors and actuators. The magnetic properties also changed with different BFCO content (x). The sample with x = 0 showed diamagnetic behavior, while the samples with 0.003 <= x <= 0.021 exhibited a paramagnetic behavior with higher magnetization at higher BFCO content.