The Influence of Mechanical Loads on the Functional Properties of Perovskite Oxides

钙钛矿结构陶瓷是商业上重要的氧化物陶瓷，由于其广泛的功能材料特性，如铁电性、铁磁性、超导性、巨磁电阻和离子导电性，被用于许多驱动、传感和能源应用。在许多工程结构中，钙钛矿材料暴露在明显的热、电和机械场中，这可能导致大的机械应力的发展。这些应力会影响单个组件的性能和整个系统的可靠性。这个艾美奖诺特计划提案的重点是应力对两种先进应用中使用的新型钙钛矿材料的影响：高应变致动器和固体氧化物燃料电池的阴极材料。每种应用都有一组所需的功能材料属性来自钙钛矿。因此，基于这两个应用程序，以下部分分为两个不同的部分，其中分别讨论技术状况、初步工作和工作计划。

Perovskite-structured ceramics are commercially important oxide ceramics that are used in numerous actuation, sensing, and energy applications due to their wide-ranging functional material properties, such as ferroelectricity, ferromagnetism, superconductivity, colossal magnetoresistance, and ionic conductivity. Perovskite materials in many engineered structures are exposed to significant thermal, electrical, and mechanical fields that can lead to the development of large mechanical stresses. These stresses can affect the individual component performance and the overall system reliability. The focus of this Emmy Noether Programme proposal is the influence of stress on novel perovskite materials used in two advanced applications: high strain actuators and cathode materials for solid oxide fuel cells. Each application has a set of required functional material properties from the perovskite. For that reason the following sections are divided into two distinctive parts based on these two applications, where the state of the art, preliminary work, and work program are discussed separately.