Robert Dittmer

TL;DR: In this article, a figure of merit analysis for key devices is presented and used to contrast lead-containing and lead-free piezoceramics for demanding applications with high reliability, displacements and frequency as well as a wide temperature range.

TL;DR: In this paper, the status and perspectives of this new class of actuator ceramics are presented, aiming at covering a wide spectrum of topics, i.e., from fundamentals to practice, and a recent discovery has greatly extended our tool box for material design by furnishing (Bi 1/2Na1/2)TiO3-based (PZT) with a reversible phase transition between an ergodic relaxor state and a ferroelectric with the application of electric field.

TL;DR: In this paper, the authors used piezoresponse force microscopy (PFM) to study the nanoscale electromechanical behavior of lead-free piezoceramics.

TL;DR: In this article, the dielectric, electrical and structural properties of (1−x) 0.94Bi1/2Na1/ 2TiO3 (BNT)-BT-xKNN with x=0.18 were investigated as potential candidates for high-temperature capacitors with a working temperature far beyond 200°C.

TL;DR: In this article, high-resolution neutron diffraction has been used to investigate the structural origin of the large electric-field-induced remanent strain in 94(Bi1/2Na 1/2)TiO3-6BaTiO 3 ceramics, and the virgin material was found to be a mixture of near-cubic phases with slight tetragonal and rhombohedral distortions of a 0a0c+ and a−a −a−a− octahedral tilt type.