This paper presents an advanced characterization method to obtain anisotropic intensive piezoelectric loss for k31, k33 and k15 mode. By redefining half-power bandwidth, new procedure is suggested with effective k31-k15 geometry using crystallographic approach. Without low capacitance bar structure, the relative error not worth consideration. Difficulty of shear mode analysis due spurious peaks...

Multiple poling steps and complex electrode configurations are indispensable for high-performance state-of-the-art piezoelectric devices, yet those create partially poled or utterly unpoled regions that significantly change behaviors of devices. Several studies have dealt with method to obtain elastic compliance, little attention has been paid loss. Furthermore, physical mechanism explain the b...

Energy harvesting from ubiquitous ambient vibrations is attractive for autonomous small-power applications and thus considerable research is focused on piezoelectric materials as they permit direct inter-conversion of mechanical and electrical energy. Nanogenerators (NGs) based on piezoelectric nanowires are particularly attractive due to their sensitivity to small-scale vibrations and may poss...

Abstract The chemical composition dependence of the Bi(Mg 0.5 Ti )O 3 (BMT)-modified BaTiO (BT)-BiFeO (BF) ceramics fabricated by a solid-state synthesis was studied. effects BT/BF ratios and BMT concentration on crystal structure, piezoelectric, ferroelectric properties were investigated. structure study carried out under synchrotron radiation X-ray diffraction revealed change from rhombohedra...

Piezoelectric microelectromechanical systems (piezoMEMS) enable dense arrays of actuators which are often driven to higher electrical fields than their bulk piezoelectric counterparts. In ceramics, high field driving causes internal heating the piezoelectric, largely due field-induced domain wall motion. Self-heating is then tracked as a function vibration velocity determine upper bound for dri...