| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Journal of the American Ceramic Society Awards Symposium
|
| Presentation Title |
Historical and Basic Introduction to Antiferroelectrics |
| Author(s) |
Clive Randall, Ian Reaney, Zhongming Fan, Long-Qing Chen, Susan Trolier-McKinstry |
| On-Site Speaker (Planned) |
Clive Randall |
| Abstract Scope |
Antiferroelectric materials are far less frequently discovered than their ferroelectric and ferroelastic counterparts. In this presentation, we will give some insight into the reasons for this and the peculiarity of antiferroelectrics in relation to the ferroelectric transitions. This will also be extended to consider them from a perspective of the soft mode condensation, and also the basic crystal chemistry within the perovskite family, where they are mostly found. There are also other basic characteristics of antiferroelectrics in relation to their prototypic to antiferroelectric phase transition. These empirically identified characteristics are important, as antiferroelectric behavior can often be mistaken and inferred from a misinterpretation of the various characteristics. In particular, double hysteresis loops are not necessarily demonstrating an antiferroelectric material. In addition to the fascinating science that underpins ferroelectricity, we will also discuss some important application areas, of which the most notable is the high energy density electrostatic capacitor. |