Hajime Yuzurihara

Magnetic domain structure of Fe3Al alloy with two-phase mixture studied by Lorentz microscopy

The Fe3Al single crystal alloys in the conditions of two-phase mixtures, α(disordered)+ B2 and α+D03, were examined by transmission electron microscopy, and the magnetic domain structures at room temperature were observed by the defocused mode of Lorentz microscopy. The magnetic contrast associated with the interface between the two phases coexisting in a submicron scale was observed, in addition to the domain wall contrast. The origin of the magnetic contrast is discussed in connection with the fluctuation of magnetization in the two-phase state.

ZnInS Thin Film Solar Cell Fabricated by Sputtering Process

To achieve low cost solar cells, new fabrication processes should be developed for higher throughput and utilization rate. In this study, we focused on a sputtering method and found that a multinary compound ZnInS (II–III–VI) is suitable for this process. The ZnInS thin film deposited by sputtering had an n-type semiconductor characteristic. A AgInTe/ZnInS thin-film solar cell fabricated by the sputtering process in a layer structure of glass/Mo/AgInTe/ZnInS/AZO showed a conversion efficiency of over 1%, the origin of which was mainly the ZnInS layer. These results suggested that ZnInS is a strong candidate photovoltaic material for fabrication with the sputtering process.