Size Effect of Nanoscale Powders on the Polarization of the BCZT Piezoceramic: A Pyroelectric and Fatigue Perspective

Abstract

Solid state synthesis route was employed to form Ba_0.85Ca_0.15Zr_0.1Ti_0.9O₃ powder. The calcined powder was high energy ball milled at different milling speeds to get powders of different particle sizes. XRD pattern of the ceramics made from these powders show the presence of pure perovskite. This paper deals with a systematic study of the pyroelectric and the fatigue properties of the ceramics. The room temperature pyroelectric coefficient (p) attains the minimum value p = 0.119X10⁻⁸ C cm⁻² K⁻¹ for the ceramic made from the powder milled at 250 rpm. The fatigue was also found to be minimum for the same ceramic samples.

Keywords:

• Nanopowders
• piezoceramics
• pyroelectric
• fatigue
• milling speed

Acknowledgements

Funding: This work was supported by the Department of Science and Technology of India (Research Project No. EMR/2014/284).