Interplay between orbital ordering and lattice distortions in perovskites

钙钛矿中轨道排序与晶格畸变之间的相互作用

• 批准号: 2594220
• 金额: --
• 依托单位: University of Warwick
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2594220
• 关键词: Interplay; between; orbital; ordering; lattice

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.

该候选人将研究各种技术相关钙钛矿中轨道有序/扬-泰勒扭曲之间的相互作用，以了解如何增强铁电性和巨磁电阻等特性。为了达到项目的目的，学生将使用高温和静水压合成来形成新的固溶体。这些材料将通过各种原位衍射实验作为温度和其他应用刺激（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有序和晶格畸变，从而帮助解释这些材料中的结构-性质关系。