Developing x-ray scattering studies of magnetic materials

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矩和局部矩。其中一个目标是利用欧洲同步辐射设施(ESRF)可用于高场自旋极化康普顿散射实验的新能力：将可以在高达9特斯拉的磁场中进行测量，而以前的最大磁场为1T。这将极大地增加使用该技术可以解决的问题的范围。首先，这意味着可以研究相变在大于1T的磁场下的超磁系统，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。另一个重要的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。提出的下一步是使用实验数据与理论相结合，在实验结果提供的约束下调整理论预测。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。

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.