Functional Oxide Materials Discovery using Extreme Conditions

使用极端条件发现功能氧化物材料

基本信息

批准号：
EP/G048584/1
负责人：
J Attfield
金额：
$ 8.08万
依托单位：
University of Edinburgh
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2009
资助国家：
英国
起止时间：
2009 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FG048584%2F1
关键词：
Functional Oxide Materials Discovery using

项目摘要

This proposal will explore the synthesis of electronic and spintronic metal oxides using high pressure and other extreme conditions.The discovery of new materials with outstanding properties motivates much of modern chemistry, physics and materials science. Electronic and magnetic materials e.g. superconductors, magnetoresistors, ferroics and multiferroics are a particular challenge due to the unpredictability of the ground states of correlated electron systems, and their frequent sensitivity to small changes in chemical composition and physical conditions. Despite these difficulties, the exploration of often complex electronic materials has transformed our understanding of many fields in the last two decades, notable inorganic examples being;- High-Tc superconductors - layered copper oxides, fullerides, MgB2, and the new RFeAsO materials.- Magneto-responsive materials - e.g. CMR and multiferroic behaviour in manganese oxide perovskites.- Quantum matter and criticality - ranging from quantum paraelectricity in SrTiO3 to high temperature quantum Hall effects in graphene.Such inorganic materials have large compressibilities (~100-400 GPa), and so high pressures (HP) are needed to change their chemistry, structures and properties significantly. The general aim of our project is to discover new oxides having interesting and useful electronic properties including spintronic activity. High pressure synthesis will be used extensively, but high temperature flux growth and thin film depositions will also be applied. The new materials will be structurally characterized and basic physical properties explored. More detailed characterizations and testing for applications (e.g. in spintronic devices) will be done in collaboration with other UK and Japanese groups.

该提案将探索利用高压和其他极端条件合成电子和自旋电子金属氧化物。具有优异性能的新材料的发现极大地推动了现代化学、物理学和材料科学的发展。电子和磁性材料，例如由于相关电子系统基态的不可预测性，以及它们对化学成分和物理条件的微小变化的频繁敏感性，超导体、磁电阻、铁性材料和多铁性材料是一个特殊的挑战。尽管存在这些困难，在过去二十年里，对复杂电子材料的探索改变了我们对许多领域的理解，著名的无机例子是：-高温超导体-层状铜氧化物、富勒烯、MgB2和新的RFeAsO材料。-磁响应材料 - 例如氧化锰钙钛矿中的 CMR 和多铁性行为。- 量子物质和临界性 - 从 SrTiO3 中的量子顺电性到石墨烯中的高温量子霍尔效应。此类无机材料具有很大的压缩率 (~100-400 GPa)，因此具有高压 (HP) ）需要显着改变它们的化学、结构和性能。我们项目的总体目标是发现具有有趣且有用的电子特性（包括自旋电子活性）的新氧化物。高压合成将被广泛使用，但高温通量生长和薄膜沉积也将被应用。新材料将进行结构表征并探索基本物理特性。更详细的表征和应用测试（例如在自旋电子器件中）将与其他英国和日本小组合作完成。