Interplay between orbital ordering and lattice distortions in perovskites

候选人将研究各种技术相关钙钛矿中轨道顺序/ Jahn-Teller扭曲之间的相互作用，以了解如何增强铁电性和巨磁阻等特性。为了实现该项目的目标，学生将使用高温和静水压力合成，以形成新的固溶体。这些材料将通过各种原位衍射实验作为温度和其他施加的刺激，如应变和静水压力的函数进行研究。将进行详细的Rietveld分析，以确定这些控制参数如何影响轨道排序和晶格畸变，帮助解释这些材料的结构-性能关系。

The candidate will investigate the interplay between orbital order / Jahn-Teller distortions in a variety of technologically relevant perovskite with a view to understanding how properties such as ferroelectricity and colossal magnetoresistance can be enhanced. To achieve the aim of the project the student will use high temperature and hydrostatic pressure synthesis to form novel solid solutions. These materials will be studied by a variety of in situ diffraction experiments as a function of temperature and other applied stimuli such as strain and hydrostatic pressure. Detailed Rietveld analysis will be performed to ascertain how these control parameters effect the orbital ordering and lattice distortions, aiding the interpretation of the structure-property relationship in these materials.