正交晶系0.24Pb(InNb)O-0.43Pb(MgNb)O-0.33PbTiO单畴晶体的机电性能
Electromechanical properties of orthorhombic 0.24Pb(InNb)O-0.43Pb(MgNb)O-0.33PbTiO single-domain crystal.
作者信息
Sun Enwei, Qi Xudong, Cao Wenwu, Zhang Rui, Yang Bin, Zhao Liancheng
机构信息
Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin 150001, China; School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin 150001, China.
出版信息
Mater Lett. 2015 Oct 15;157:163-165. doi: 10.1016/j.matlet.2015.05.081. Epub 2015 May 23.
Single-domain structure with orthorhombic symmetry has been achieved in morphotropic phase boundary composition 0.24Pb(InNb)O -0.43Pb(MgNb)O-0.33PbTiO ternary single crystal by applying a large field along the pseudo-cubic direction [011]. Complete set of elastic, piezoelectric, and dielectric constants has been determined with self-consistency. This crystal shows very large thickness shear piezoelectric coefficient =4324 pC/N and extremely high shear electromechanical coupling factor =96%. Three-dimensional orientation dependence of the longitudinal piezoelectric constant was calculated and compared with experimental values, which revealed nearly 20% extrinsic contributions in domain engineered [001] and [111] poled conditions.
通过沿伪立方方向[011]施加强电场，在准同型相界组成的0.24Pb(InNb)O -0.43Pb(MgNb)O-0.33PbTiO三元单晶中实现了具有正交对称性的单畴结构。已自洽地确定了完整的弹性、压电和介电常数集。该晶体显示出非常大的厚度剪切压电系数 =4324 pC/N和极高的剪切机电耦合因子 =96%。计算了纵向压电常数的三维取向依赖性并与实验值进行比较，结果表明在畴工程[001]和[111]极化条件下，非本征贡献近20%。
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