Effect of Cd2+ on the Growth and Thermal Properties of K2SO4 crystal
| Autor: | Anooz, S. Bin, Klimm, D., Schmidbauer, M., Bertram, R., Rossberg, M. |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | J. Phys. Chem. Sol. 69 (2008) 2356-2359 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.jpcs.2008.03.015 |
| Popis: | Single crystals of pure and Cd2+ doped potassium sulfate were grown from aqueous solutions by the slow evaporation technique. From nutrient solutions with a CdSO4 concentration of 4wt.% crystals containing 0.014wt.% dopant concentration could be obtained. The X-ray diffraction patterns of powdered crystals confirmed their crystal structures for both cases. Thermal analysis of pure crystals shows that the alpha-beta phase transformation peak around 580 deg C is superimposed with spurious effects, while for Cd2+ doped crystals this is not the case. The thermal hysteresis of the phase transition is 8 K for undoped K2SO4 and is reduced to 3.5 K for K2SO4:Cd2+. Compared to undoped crystals, the optical transmittance of Cd2+ doped crystals is higher. Comment: 5 pages, 6 figures |
| Databáze: | arXiv |
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