(Cuinse2)1-X (Tase)X Solid Solutions (0 < X ≤ 0.5): X-Ray Diffraction, Scanning Electron Microscopy, Differential Thermal Analysis and Magnetic Susceptibility

Polycrystalline samples of the (CuInSe₂)1-x (TaSe)x system were prepared by the melt and anneal technique in the composition range 0 < x ≤ 0.5. Products were characterized by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Differential Thermal Analysis (DTA) and SQUID techniques. From XRD and SEM, it was found that the solubility of TaSe in CuInSe2 is around 10%; however, samples up to x = 0.5 are composed by a mean tetragonal CuInSe₂-like phase with traces of TaIn0.67Se₂.