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This work compared the effects of isovalent Sn 4+ and aliovalent Ta 5+ doping on Ti-sites in lead-free perovskite type Bi 1/2 (Na 0.82 K 0.18 ) 1/2 TiO 3 piezoelectric ceramics on their ferroelectric and electric field-induced strain behavior. Both impurities led to a diffuse transformation from the coexistence of ferroelectric rhombohedral and...
Electric field-induced strain (EFIS) properties of Bi 1/2 (Na 0.82 K 0.18 ) 1/2 TiO 3 (BNKT) ceramics modified with Sr(K 1/4 Nb 3/4 )O 3 (SKN) have been investigated as functions of composition and temperature. BNKT ceramics near a phase boundary revealed the coexistence of ferroelectric rhombohedral and tetragonal phases, resulting in...
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