A phase diagram of Ba1‐xCaxTiO3 (x = 0‐0.30) piezoceramics by Raman spectroscopy

• DOI: 10.1111/jace.15415
• Publication Date: 2018-01-02T07:36:50Z
• Authors: Chang Shu; Daniel Reed; Tim W. Button
• Keywords: Lead zirconate titanate; Barium titanate; Zirconate

Abstract Piezoelectric ceramics are widely used in sensors, actuators, and ultrasonic transducers due to their ability achieve efficient conversion between electric mechanical energy. There is a current drive toward lead‐free material systems capable of achieving comparable piezoelectric performance environmentally hazardous, but commonly used, lead‐based materials such as lead zirconate titanate. This work constructs an accurate phase diagram for barium calcium titanate (Ba 1‐x Ca x TiO 3 or BCTO ). The substitution 2+ on the Ba‐site much interest property improvements compared BaTiO . In this work, Ba ( = 0‐0.30) samples have been made by solid‐state methods and, following initial characterization X‐ray diffraction XRD ), evaluation changes Raman spectra has allowed determination transition temperatures construction diagram.