Structural investigations and phase identification in (Cd, Cr)Te alloys

作者：Popovych V D^*; Sagan P; Bester M; Wierzbinska M; Kuzma M

来源：Journal of Materials Science, 2016, 51(9): 4618-4626.

DOI：10.1007/s10853-016-9777-y

Polycrystalline (Cd,Cr)Te ingots with 2.5, 5, and 25 at.% of nominal chromium content were prepared by alloying the mixture of elemental Cd, Te, and Cr2Te3 salt. The alloys were studied by means of scanning electron microscopy, X-ray diffraction, and energy dispersive X-ray spectroscopy methods in order to determine their crystallinity and phase composition. It was found that the ingots of the lowest doped material are composed of continuous CdTe:Cr host matrix with embedded Cr-related second-phase particles. With the exception of zinc-blende type Cd1-x Cr (x) Te, the grains of Cr-Te intermetallic compounds with mu m-sized particles of pure Cr are solidified from the higher-doped melt. The mechanism of their formation was examined on the basis of the phase diagram for the Cr-Te system. Chromium solubility limit in the cadmium telluride lattice was estimated to be about 1.5 at.%.

• 出版日期2016-5