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Chemistry and materials

Structure characterisation - Water dynamics – Planetology - Catalysis - Energy production – Clean energy - New materials - Novel engineering processes - Methods

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The influence of structure is everywhere; the properties of water and ice, the hardness of metals, the strength of magnets, the biology of DNA or the effect of antibodies on viruses - all depend on structure. Crystallography is studied at the ILL in a broad sense, using both single crystal and powder diffraction. Some structural studies may require small-angle scattering as well.
Neutron diffraction is ideal for determining the structure of materials containing light atoms such as hydrogen, carbon, nitrogen and oxygen.  We need to understand the structure of materials before we can understand their properties and how they react.

To master the methodologies leading to new improved materials we need detailed knowledge of the structure of solids at the atomic or molecular level. Owing to their unique properties, neutrons can play a crucial role in this, by resolving, for example, the arrangements of magnetic moments in complex magnetic systems, by locating light atoms in intricate structures, or by assessing the residual stress distribution in bulky mechanical parts. The development and engineering of components with improved functionality is the key to technological progress, which in turn provides sustainable economic growth. To achieve this goal, scientists and engineers are developing smarter materials and components.

Highlights

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July 10, 2025 Neither solid nor liquid : Neutrons help reveal an exotic state of matter
A team of researchers recently used the thermal-neutron two-axis diffractometer D23 at the ILL to investigate Na2 BaCo(PO4 )2 (NBCP), a material that surprisingly behaves as a ‘spin supersolid’ -a state combining properties of both a solid and a liquid. Neutrons, acting like tiny magnets themselves, were the ideal probes to reveal the hidden magnetic order and dynamics within this material. This discovery, which is also relevant for energy-efficient cooling, provides the first real-life evidence of a supersolid state in a quantum magnet.
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July 7, 2025 Neutrons explore exotic insulator's quantum secrets
A recent study published in Nature Communications reveals an unexpected transition between two different insulator states. Neutron diffractometry experiments at the ILL, conducted on the D2B high-resolution, two-axis diffractometer, open up the path towards advanced technologies by providing vital insights into the complex electronic behavior of such materials.
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July 4, 2025 Spinning into the future : polarised neutrons help unravel the mysteries of skyrmions
A recent study, published in Science and Technology of Advanced Materials, and conducted at the Institut Laue-Langevin (ILL), utilised polarised neutron scattering on the D33 instrument to explore skyrmions. This research provided crucial microscopic insights into these magnetic structures. The D33 instrument's unique ability to combine high magnetic fields and  polarised neutrons was essential for understanding skyrmion phase transitions. The findings  can enhance the development of skyrmion-based spintronic devices, which promise lower energy consumption and higher data storage efficiency. The study's methodologies can be applied to other magnetic materials, aiding in the discovery of new phenomena and the development of advanced magnetic materials.

Video playlist

Highlights brochure on how neutrons help understanding the structure of new materials