A growing interest in devices based on spintronics demands a development of magnetic semiconductors. A promising material for such applications is kesterite doped with ferromagnetic elements. We present a method of obtaining Cu2MSnS4 (M = Zn, Fe, Mn, Ni) single crystals, using metals, elemental sulfur and minor amounts of iodine. The syntheses were carried out in quartz ampoules closed under vacuum and heated in a tube furnace at 650°C for 7 to 90 days. A method of synthesis of comparatively good tetragonal single crystals of Cu2FeSnS4 and Cu2MnSnS4 was achieved. Raman spectra of purely Mn-and Nisubstituted kesterites have been measured for the first time.
Synthesis of Magnetic Doped Kesterite Single Crystals. -Cu 2MSnS4 (M: Zn, Fe, Mn, Ni) single crystal kesterites are prepared by chemical transport reaction using the corresponding metals, sulfur, and minor amounts of I 2 (evacuated quartz ampoules, 650 C, 100 C temp. gradient, 7-90 d). Suitable tetragonal single crystals of Cu2FeSnS4 and Cu2MnSnS4 are refined in the space group I42m (single crystal XRD) with the metal ions filling the tetrahedral voids formed by the sulfur network. Raman spectra of all compounds are presented. The syntheses are performed in view of a possible application of kesterites in spintronics. -(PODSIADLO*, S.; BIALOGLOWSKI, M.; FADAGHI, M.; GEBICKI, W.; JASTRZEBSKI, C.; ZERO, E.; TRZYBINSKI, D.; WOZNIAK, K.; Cryst. Res. Technol. 50 (2015) 9-10, 690-694, http://dx.doi.org/10.1002/crat.201400435 ; Fac. Chem., Warsaw Univ. Technol., PL-00-664 Warszawa, Pol.; Eng.) -J. Schramke 46-013
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