by: Wenxiang Ding, Maxime Bavencoffe and Marc Lethiecq Abstract: The formulation for developing the dynamic stiffness matrix for a piezoelectric array element with arbitrary boundary conditions is presented in this paper. Gorman’s superposition method is innovatively utilized to obtain the solutions of the governing equations of motion for piezoelectric materials. Boundary conditions are satisfied in a strong […]

by: Vijay Bijalwan, Vladimír Prajzler, Jiří Erhart, Hua Tan, Pavla Roupcová, Dinara Sobola, Pavel Tofel and Karel Maca Abstract: This work shows for the first time the possibility to sinter BCZT powder compacts by rapid heating rates within one hour of sintering, while achieving good piezoelectric properties. The sintering was performed by rapid (heating rates […]

by: S. Sivaramakrishnan, P. Mardilovich, T. Schmitz-Kempen, S. Tiedke Abstract: In a recently published paper [S. Sivaramakrishnan et al., Appl. Phys. Lett. 103, 132904 (2013)], the electrode-size dependence of the longitudinal effective piezoelectric coefficient (d33,f) of piezoelectric thin films measured by double beam laser interferometry was shown to be due to the substrate clamping effects. It […]

by: Pardo, Lorena, Álvaro García, Franz Schubert, Antje Kynast, Timo Scholehwar, Alfredo Jacas, and José F. Bartolomé Abstract: Achieving good piezoelectric properties, such as the widely reported d33 charge coefficient, is a good starting point in establishing the potential applicability of piezoceramics. However, piezoceramics are only completely characterized by consistent piezoelectric-elastic-dielectric material coefficient matrices in […]

by: Matej Sadl, Kevin Nadaud, Micka Bah, Franck Levassort, Udo Eckstein, Neamul H Khansur, Kyle G Webber and Hana Ursic Abstract: The miniaturization of electronic devices and power systems requires the fabrication of functional components in the form of micrometer-sized thick films. A major challenge is the integration of functional ceramics with metals, which are […]

by: Š. Svirskas, T. Kudrevičius, E. Birks, M. Dunce, A. Sternbergs, C.-H. Huang, J. Banys Abstract: In this paper, we present the dielectric and piezoelectric properties of tetragonal 0.8Na0.5Bi0.5TiO3-0.2BaTiO3 modified with NaNbO3 ((1-x)[0.8Na0.5Bi0.5TiO3-0.2BaTiO3]-xNaNbO3). Our experimental study has revealed that the ferroelectric phase in these compositions is suppressed with the increase of sodium niobate concentration. A […]

by: Longfei Song, Sebastjan Glinsek, Silvo Drnovsek, Veronika Kovacova, Barbara Malic and Emmanuel Defay Abstract: Emerging haptic technology based on piezoelectric actuators enables to realize innovative tactile human–machine interface. The standard solution is based on stand-alone bulk ceramics glued directly on the haptic device. Thin-film actuators with metal–insulator–metal structure have been developed to directly integrate actuators on haptic plates. The […]

by: Mureddu, Marzia, José F. Bartolomé, Sonia Lopez-Esteban, Maria Dore, Stefano Enzo, Álvaro García, Sebastiano Garroni, and Lorena Pardo Abstract: Lead-free (Ba0.92Ca0.08) (Ti0.95 Zr0.05) O3 (BCZT) ceramics were prepared by a solid-state route (SSR) using ultra-low synthesis (700 °C/30 min and 700 °C/2 h) and sintering temperatures (from 1150 °C to 1280 °C), due to […]

by: Hernández-Moreno, Ana Cristina, Armando Reyes-Montero, Brenda Carreño-Jiménez, Mónica Acuautla, and Lorena Pardo Abstract: Ba0.92Ca0.08Ti0.95Zr0.05O3 (BCZT8-5) ceramic materials have been scarcely studied as lead-free piezo/ferroelectrics despite their enhanced Curie temperature (>100 °C) with respect to most studied BCZT compositions. In this work, homogeneous dense BCZT8-5 ceramics with grain size in the range of 20 μm, […]

by: Palosaari, J. and Juuti, J. and Tyholdt, F. and Østbø, N.P. and Vogl, A. and Poppe, E. and Guðbjörnsson, S. and Ringgaard, E. and Hok, B. and Fagerman, P.-E. and Gløersen, P. and Raeder, H. and Jantunen, H. Abstract: In this paper, thin film piezoelectric ultrasonic transducers with a two electrode design and various […]