Completed Chemistry Physics & Astronomy

Putting the Squeeze on Molecule-Based Magnets

In plain English

AI plain-English summary

Squeezing magnetic materials in a vice-like press reveals how their internal molecular structure dictates their magnetic behaviour. This relationship between structure and magnetism is poorly understood for many materials, yet it is the key to designing better magnets for technologies that already depend on them. Hard drives, mobile phones, MRI scanners, airport security systems, and even the cooling systems on space telescopes all rely on magnetic materials whose performance is limited by an incomplete grasp of how their atoms arrange themselves under stress. By systematically applying high pressure to a range of magnetic compounds—from nanoparticles to porous crystals that can trap guest molecules—the team aims to map out exactly how compression alters magnetic properties. This is fundamental science: there is no immediate product. But understanding the structural rules that govern magnetism could eventually allow researchers to tailor a material’s magnetic strength, stability, or switching speed without trial-and-error chemistry. Past fundamental work on pressure-driven changes in materials has led to everything from better data storage to more sensitive medical imaging.

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How the physical properties of any material change as their structures change is a fundamentally important question to answer in science. If this relationship can be understood, it can then be exploited to tune properties in a specific manner, making the material useful in a range of important commercial applications. In chemistry one very important relationship is that between structure and magnetism. Magnetic materials find use in information storage in computer hard-drives and mobile electronic devices, in hospitals in MRI scanners and in the diagnosis and treatment of cancer, in the security industry where they are employed in airport scanners, and in outer-space research where they are used in the cooling of analytical instrumentation. Before any magnetic material can be taken to the industrial marketplace the fundamental relationship between molecular structure and magnetic behaviour must be examined and understood. The best way of doing this is to apply pressure to the material and monitor its magnetic response. In this program of research we will continue to examine our core chemistry projects focusing on a variety of important magnetic materials under pressure, employing a breadth of complimentary characterisation techniques. We will also expand our research to examine high risk, high reward feasibility studies on more exotic, hitherto unexplored materials. For example, the application of extreme conditions to magnetic nanoparticles and the host-guest chemistry of micro- and mesoporous magnets. We will hire the best new researchers as they become available in order to explore ambitious and speculative new projects, employing PDRAs with expertise/skills in areas not currently covered by the team - for example the addition of theoretical expertise to cover a wide range of calculations. The PDRAs will be given licence to explore their own ideas within the theme of the award. Reactive projects will permit rapid response to exciting and unexpected new discoveries from our own research or from international groups, and exploratory projects will allow potentially ground-breaking research ideas with a high degree of technical risk. The platform grant will ensure a high profile for UK extreme conditions research and for CSEC, maintaining its position at the forefront of high pressure science. International collaborations will be strengthened by involving the whole Platform team, and will facilitate new links to other internationally-leading groups. Inviting research lecturers and exchanging research staff with such groups will be a further benefit. The Platform award will also augment the cross-disciplinary nature of the training that we can provide to our PDRAs. Working together in a common group will provide a stimulating atmosphere to generate new ideas and world-leading discoveries in extreme conditions research.

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Researchers

Euan Brechin (Principal Investigator)Konstantin Kamenev (Co-Investigator)Mark Murrie (Co-Investigator)Michael Probert (Co-Investigator)Neil McKeown (Co-Investigator)Simon Parsons (Co-Investigator)Stephen Moggach (Co-Investigator)

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Original classification

Research Grant

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