Studying the heterogeneity of the CrxTi1-xCh2 (Ch = S, Se) single crystals using X-ray scanning photoemission microscopy

Electronic Structure of VxTi1–xSe2 Solid Solutions with the (V,Ti)Se2 Structural Fragments

“…Therefore, we can exclude the formation of a periodically ordered substitutional V x T 1– x Se 2 solid solution for x ≥ 0.5. A possible explanation of the difference in the constant-energy surfaces for V 0.5 Ti 0.5 Se 2 and V 0.73 Ti 0.42 Se 2 could be the formation of TiSe 2 and VSe 2 SFs, as previously suggested in ref . This possibility also indicate our EMF measurements discussed in the next section.…”

“…On the other hand, the previously discovered formation of mesoscopic structural fragments (SF) (e.g., in the Cr x Ti 1−x Se 2 or TiSe x S 2−x solutions) could explain this unusual phenomenon. 13,14 The formation of SFs was also suggested for V x Ti 1−x Se 2 . 15 However, the question about the conjugation character of these SFs remains.…”

“…An amazing property is a huge difference in the kinetics of electrode processes in the solid solutions compared to the pure TiCh 2 and VCh 2 (Ch = S, Se) host compounds. , Because the Li atoms occupy the same crystallographic sites in the solid solutions as in the host compounds, it seems difficult to explain the origin of the difference in the diffusion mobility of Li in solid solutions. On the other hand, the previously discovered formation of mesoscopic structural fragments (SF) (e.g., in the Cr x Ti 1– x Se 2 or TiSe x S 2– x solutions) could explain this unusual phenomenon. , The formation of SFs was also suggested for V x Ti 1– x Se 2 . However, the question about the conjugation character of these SFs remains.…”