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- W3146062306 abstract "Lead-free (Ba0.85Ca0.15)1-xLa2/3xTi0.90Zr0.10O3 ? 1m ol% MnO 2 ceramics have been prepared an ordinary sintering technique and the effects of La-doping on the microstructure, dielectric and piezoelectric properties of Ba0.85Ca0.15Ti0.90Zr0.10O3 were studied. All the ceramics possess a pure perovskite structure, indicating that La ions are incorporated into Ba0.85Ca0.15Ti0.90Zr0.10O3 lattices to form a lead-free solid solution. The ceramics are transformed from coexistence of orthorhombic and tetragonal phases to pseu- docubic phase with the doping level of La increasing. After the doping of La, grain growth is inhibited, ferroelectric-para- electric phase transition temperature (TC )i s decreased and the degree of diffuse phase transition is increased. The ferro- electricity of the ceramics is weakened after the addition of La. Unlike donor-doped lead zirconate titanate ceramics, the piezoelectric properties of the ceramics are degraded after the partial substitution of La 3? for (Ba0.85Ca0.15) 2? because of the weakness or disappearance of coexistence of orthorhom- bic and tetragonal phases near room temperature. The (Ba0.85 Ca0.15)1-xLa2/3xTi0.90Zr0.10O3 ? 1m ol% MnO 2 ceramic with x = 0 exhibit the optimum piezoelectric properties: d33 = 277 pC/N and kp = 30.3 %, respectively." @default.
- W3146062306 created "2021-04-13" @default.
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- W3146062306 date "2013-01-01" @default.
- W3146062306 modified "2023-09-24" @default.
- W3146062306 title "Effects of La-doping on microstructure, dielectric and piezoelectric properties of Ba 0.85 Ca 0.15 Ti 0.90 Zr 0.10 O 3 lead-free ceramics" @default.
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