The size effect of BiFeO nanocrystals on the spatial spin modulated structure.

The spatial spin modulated structure (SSMS) of the cycloid type present in bulk BiFeO prevents the linear magnetoelectric effect. One way to influence this structure is to reduce the crystal size to the nanoscale. Various opinions are circulating in the literature about the effect of nanocrystal size on SSMS, and to investigate this issue, we used a number of methods, with zero-field NMR (ZF NMR) spectroscopy at the forefront.