Piezoelectric performances of lead-reduced (1-x)(Bi0.9La0.1)(Ga0.05Fe0.95)O3 -x(Pb0.9Ba0.1)TiO3 crystalline solutions in the morphotropic phase boundary
作者： Jinrong Cheng , Zhongyan Meng , L. Eric Cross
DOI: 10.1063/1.1810633
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摘要: In this investigation, (1−x)(Bi0.9La0.1)(Ga0.05Fe0.95)O3-x(Pb0.9Ba0.1)TiO3(BLGF-PBT) crystalline solutions have been fabricated by using the solid-state reaction method. A ferroelectric rhombohedral/tetragonal morphotropic phase boundary (MPB) of (1−x)BLGF-xPBT was observed for x=0.4. vicinity MPB, 0.6BLGF-0.4PBT revealed maximum dielectric constant K and piezoelectric d33 1168 186pC∕N, respectively. The substitution 10at.% Ba Pb dramatically increased relative to (1−x)BLGF-xPT at same x content. Curie temperature Tc determined be above 386°C through compositions investigated. diagram a V-shaped relationship between planar coupling coefficient Kp measured 0.37 0.6BLGF-0.4PBT, which stable with increasing measurement until 170°C. It is demonstrated that BLGF-PBT competitive alternative material, ...
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