Developing x-ray scattering studies of magnetic materials

开展磁性材料的 X 射线散射研究

• 批准号: EP/F021518/1
• 负责人: Jon Duffy
• 金额: $ 14.8万
• 依托单位: University of Warwick
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF021518%2F1
• 关键词: Developing; ray; scattering; studies; magnetic

The purpose of this project is the study of magnetic properties of magnetic materials. It will exploit x-ray scattering methods to study both the itinerant and local moments in these systems. One of the objectives is to exploit the new capabilities available for high field spin-polarised Compton scattering experiments at the European Synchrotron Radiation Facility (ESRF): measurements will be possible in magnetic fields of up to 9 Tesla, increased from the previous maximum of 1T. This will vastly increase the range of problems that can be addressed using the technique. Firstly, it means metamagnetic systems can be studied where the transition is at a field greater than 1T, and secondly, it can greatly increase the measurement's sensitivity in many systems, since this is proportional to the square of the induced magnetic moment.Another important objective is the development of the methods used to interpret the experimental data. Presently, these data are compared with theoretical calculations. The proposed step forward is to use the experimental data inconjunction with the theory to tune the theoretical predictions subject to the constraints provided by the experimental results. This will enable us to learn much more about the theoretical calculations and the electronic properties underlying the observed experimental results.

本项目的目的是研究磁性材料的磁性。它将利用X射线散射方法来研究这些系统中的巡回和局部时刻。目标之一是利用欧洲同步辐射设施（ESRF）的高场自旋极化康普顿散射实验的新能力：测量将可能在高达9特斯拉的磁场中进行，从以前的最大值1 T增加。这将大大增加使用该技术可以解决的问题的范围。首先，这意味着可以研究在大于1 T的磁场下发生相变的变磁系统;其次，它可以大大提高许多系统的测量灵敏度，因为这与感应磁矩的平方成正比。另一个重要目标是发展用于解释实验数据的方法。目前，这些数据与理论计算进行了比较。所提出的前进步骤是使用实验数据结合理论来调整理论预测受实验结果提供的约束。这将使我们能够更多地了解理论计算和观察到的实验结果背后的电子性质。

项目成果

Determination of spin and orbital magnetization in the ferromagnetic superconductor UCoGe

铁磁超导体 UCoGe 中自旋和轨道磁化强度的测定

• DOI: 10.1103/physrevb.92.121107
• 发表时间: 2015
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Butchers M

Bulk electronic structure of optimally doped Ba ( Fe 1 - x Co x ) 2 As 2

最佳掺杂Ba ( Fe 1 - x Co x ) 2 As 2 的体电子结构

• DOI: 10.1103/physrevb.81.064509
• 发表时间: 2010
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Utfeld C

Ferrimagnetism in Fe-rich NbFe 2

富铁 NbFe 2 中的亚铁磁性

• DOI: 10.1103/physrevb.85.115137
• 发表时间: 2012
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Haynes T