Type: 
SSO Seminar
Date-Time: 
Wednesday, February 24, 2016 - 16:00 to 17:00
Location: 
Weniger 304
Event Speaker: 
Michelle Dolgos
Local Contact: 
Yun-Shik Lee
Abstract: 

Due to the environmental impact of lead, there is a considerable focus on the synthesis of lead-free piezoelectric materials.  Pb(Zr,Ti)O3 (PZT) is the current industry standard for piezoelectric ceramics, but has a major disadvantage in that it contains lead, which is increasingly regulated.  Our understanding of the high piezoelectric response in PZT is a direct result of the incredibly detailed structural studies that have been performed.  Unfortunately, the same level of detail has not been applied to the lead-free counterparts of PZT.  While some structural studies have examined both the average structure and local distortions of important lead-free piezoelectrics, there is currently not enough information to form a hypothesis about why PZT outperforms the lead-free alternatives.  This talk uses a few examples to highlight the importance of obtaining a comprehensive structural description of lead-free piezoelectric materials in order to understand their properties and make new materials via rational design.