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SYNTHESIS AND CHARACTERIZATION OF Pr2S3 BINARY COMPOUND
Resumen
In the current work it is shown that the synthesis method that consists in direct reaction of praseodymium and sulfur in its elemental form, using heat as a treatment, with relatively low temperatures and reaction time of one week, allows the preparation of Pr2S3 compound, with a purity of about 92%. The respective characterization of resultant materials was carried out using powder XRD, where by it was determined that the thermal treatment used, effectively leads to the binary sulfide of interest, a compound known to be semiconductor.
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Referencias
Selishchev, A. and V. Pavlishchuk, Effect of Formation Conditions on the Size, Shape and Spectral Properties of EuS and Pr2S3 Nanoparticles. Theoretical and Experimental Chemistry, 2014. 50(1): p. 39-45.
Krichevtsov, B., Anisotropy of the linear and quadratic magnetic birefringence in rare-earth semiconductors (γ-Ln2S3 (Ln= Dy3+, Pr3+, Gd3+, La3+). Journal of Experimental and Theoretical Physics, 2001. 92(5): p. 830-839.
Ohta, M., et al., Preparation of R2S3 (R: La, Pr, Nd, Sm) powders by sulfurization of oxide powders using CS2 gas. Journal of alloys and compounds, 2004. 374(1): p. 112-115.
Ohta, M., et al., Phase transformation and microstructures of Ln2S3 (Ln= La, Sm) with different impurities content of oxygen and carbon. Journal of alloys and compounds, 2006. 408: p. 551-555.
Ohta, M., et al., Thermoelectric properties of Th3P4-type rare-earth sulfides Ln2S3 (Ln= Gd, Tb) prepared by reaction of their oxides with CS2 gas. Journal of Alloys and Compounds, 2008. 451(1): p. 627-631.
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