Evidence of Cd1-xMnxS nanocrystal growth in a glass matrix by the fusion method

Dantas, N. O.; Neto, E. S. F.; Silva, R. S.; Jesus, D. R.; Pelegrini, F.
November 2008
Applied Physics Letters;11/10/2008, Vol. 93 Issue 19, p193115
Academic Journal
In this work, CdS nanocrystals (NCs) doped with Mn were synthesized in a glass matrix by fusion. The as-grown Cd1-xMnxS NCs were investigated by optical absorption, atomic force microscopy, and electron paramagnetic resonance (EPR). The incorporation of Mn2+ ions in CdS NCs was confirmed by an absorption transition blueshift with increasing Mn concentration x. EPR spectra demonstrated the existence of two distinct Mn2+ ion locations: one incorporated in the core and the other near the surface of the Cd1-xMnxS NCs. The hyperfine interaction constants used to simulate the EPR spectra were A=7.6 and 8.2 mT, respectively. The synthesis of high quality Cd1-xMnxS NCs may allow the control of optical and magnetic properties.


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