High Pressure Synthesis of All Transition Metal Oxide Perovskites and Related Materials

全过渡金属氧化物钙钛矿及相关材料的高压合成

基本信息

批准号：
EP/P021786/1
负责人：
J Attfield
金额：
$ 83.82万
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：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FP021786%2F1
关键词：
Pressure Synthesis Transition Metal Oxide

项目摘要

The search for new electronic and magnetic materials with outstanding properties motivates much of modern chemistry, physics and materials science. The major discoveries of superconducting cuprates and magnetoresistive manganites, plus renewed interests in multiferroics, mixed conductors in fuel cells and batteries, and optoelectronics such as W(hite light)LED phosphors have given rise to worldwide interest in metal oxide-related materials. This project is centred on perovskites, which are a broad class of materials with structures based on the ABX3 arrangement of the mineral CaTiO3. The inexorable rise of perovskites has been driven by their enormous chemical and structural flexibility and by their outstanding physical and chemical properties, which are often the best in their field, e.g. ferroelectric BaTiO3, YBa2Cu3O7 high-Tc superconductor, (La,Sr)MnO3 and Sr2FeMoO6 CMR (colossal magnetoresistance) for spintronics, multiferroic BiFeO3, mixed conductors such as doped LaCrO3 for fuel cells, molecular perovskites like (CH3NH3)PbI3 for photovoltaic devices. Many of these contain Transition Metals (TM) at the perovskite B-sites.This project will build on recent developments to explore 'All Transition Metal' (ATM) oxide perovskites where TM's occupy all of the A and B sites in the ABO3 perovskite structure. Proof of concept experiments in the last few years have shown that such materials can be synthesised using high pressure conditions, and some have useful and interesting electronic properties based on TM cation ordering, e.g. a novel switch from negative to large positive magnetoresistances. This project will explore the chemical variety and electronic and magnetic properties of a range of new ATM and related TM-rich oxide perovskites using high pressure synthesis. Pressure is an important variable in materials exploration. We have achieved up to 22 GPa in our two stage press providing an appropriate pressure range to stabilise the ATM oxide perovskites.

寻找具有出色特性的新电子和磁性材料的搜索激励了现代化学，物理和材料科学。超导粉结酸盐和磁磁铁的主要发现，以及对多铁素料的新兴趣，燃料电池和电池中的混合导体以及W（Hite Light LED）LED磷光剂等光电子的混合导体引起了与金属相关氧化物相关材料的全球兴趣。该项目集中在钙钛矿上，该项目是基于矿物catio3的ABX3排列的大量材料。钙钛矿的不可阻碍的兴起是由它们巨大的化学和结构柔韧性以及其出色的物理和化学特性所驱动的，这些特性通常是其领域中最好的，例如铁电batio3，YBA2CU3O7高-TC超导体，（LA，SR）MNO3和SR2FEMOO6 CMR（巨大的磁磁性），用于多效性BifeO3，诸如燃料细胞的lacro3，例如分子perovski3nh3nh3nh3nh3nh3nh3nh3nh3nh3nh3nh3nh3nh3nh3nh3nh3nh3nh3nhh3nhh3nhh3nhh3nhh3nh 3 nhh3nh 3 nhh3nhh3nh 3 nhh3nh 3。其中许多包含钙钛矿B-位置上的过渡金属（TM）。此项目将基于探索“所有过渡金属”（ATM）氧化物钙钛矿的最新发展，其中TM在Abo3 Perovskite结构中占据了TM的全部A和B位点。在过去几年中，概念验证实验表明，可以使用高压条件合成此类材料，有些材料基于TM阳离子排序具有有用且有趣的电子特性，例如从负面到大磁磁性的新型切换。该项目将使用高压合成来探索一系列新的ATM和相关TM富含TM的氧化物钙钛矿的化学品种，电子和磁性。压力是材料探索的重要变量。在我们的两阶段压榨机中，我们最多达到了22 GPA，提供了适当的压力范围来稳定ATM氧化物钙钛矿。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Magnetic frustration in the high-pressure Mn2MnTeO6 (Mn3TeO6-II) double perovskite.

DOI：
10.1039/c9cc07733b
发表时间：
2019-11
期刊：
Chemical communications
影响因子：
4.9
作者：
Á. Arévalo-López;E. Solana-Madruga;C. Aguilar-Maldonado;C. Ritter;O. Mentré;J. Attfield
通讯作者：
Á. Arévalo-López;E. Solana-Madruga;C. Aguilar-Maldonado;C. Ritter;O. Mentré;J. Attfield

Spin-phonon coupling in melanothallite Cu2OCl2