Research on detection of different metallographic structures of high speed wheel steel based on laser-induced breakdown spectroscopy.

The laser-induced breakdown spectroscopy (LIBS) experimental platform was applied to obtain LIBS spectral the data of 10 CL60 wheel steel samples. The principle component analysis (PCA) was used to preliminarily analyze the macroscopic characteristics of LIBS spectral data. With the spectral intensity and spectral intensity combined with spectral intensity ratio as variables, three spectral correction methods including median filtering, baseline correction and multiple scattering correction (MSC) were used for pretreatment.

A first-principles study on the magnetoelectric coupling induced by Fe in a two-dimensional BaTiO(001) ultrathin film.

A first-principles approach is utilized to study the magnetoelectric coupling induced by Fe in two-dimensional BaTiO(001) ultrathin film. It is observed that the Fe impurity increases the total magnetic moment but suppresses the spontaneous polarization. Furthermore, the total magnetic moment of Fe replacing Ti is influenced by the distance between dopants and decreases with reducing distance.