Yueping Cao, Zheqing Xu

(College of Physics Science and Technology, Yangzhou University)

Abstract：

High performance materials widely used in modern industry and daily life have excellent properties derived from their unique microstructure or dynamic behavior. For complex materials such as high-temperature superconductors, quantum magnetic materials, and low dimensional semiconductors, the multi-body interactions such as internal spin, orbit, charge, and phonon are key factors. These studies not only involve cutting-edge issues in basic science, but also a major strategic requirement for China's scientific and technological development. However, traditional visible light microscopes are no longer able to meet the needs of material microscale research. At present, X-rays, electrons, and neutrons have become the main research media. Among them, neutrons have shown significant value in material research due to their unique advantages: they are uncharged, have strong penetrability, can be measured non destructively, and are suitable for extreme environments; Having a magnetic moment, capable of detecting unpaired electrons and magnetic moments in materials; The wavelength is equivalent to the lattice size of solid materials, and the energy is similar to the excitation energy of material elements, with excellent momentum and energy resolution; Sensitive to light elements, suitable for research on organic compounds and battery structures.

Key Words：

neutron scattering technology; material microstructure; magnetic detection