MOLECULAR NANOMAGNETISM: THE FIRST FREQUENCY DOMAIN MAGNETIC RESONANCE SPECTROMETER IN THE UNITED KINGDOM

该提案旨在确定制备更好的单分子磁体的新策略。单分子磁体是由于其磁各向异性而显示纯分子起源的稳定磁化的分子。它们是自下而上的磁性数据存储材料的有希望的候选者。其中一个优点是所有的分子都是相同的，并且颗粒的大小没有分布。然而，磁化的阻断温度仍然太低。在这里，我们建议研究三类单分子磁体，可能会显示出较高的阻塞温度：首先，那些由高各向异性离子，其次，那些含有离子的轨道时刻，最后那些含有镧系离子。我们将研究这些系统使用相结合的磁力和频域磁共振波谱。后者对英国来说是一种新方法。

This proposal aims to identify novel strategies for preparing better single-molecule magnets. Single-molecule magnets are molecules that show stable magnetisation of purely molecular origin, due to their magnetic anisotropy. They are promising candidates for a bottom-up approach to magnetic data storage materials. One of the advantages is that all the molecules are the same and there is no distribution in the size of the particles. However, the blocking temperature of the magnetisation is still too low. Here we propose to study three classes of single molecule magnets that may show higher blocking temperatures: First of all, those composed of high-anisotropy ions, secondly, those containing ions with an orbital moment, and finally those containing lanthanide ions. We will study these systems using a combination of magnetometry and frequency domain magnetic resonance spectroscopy. The latter is a method that is new to the UK.