Abstract
Wurzite ZnS:Mn nanorods are synthesized via a solvothermal method by using ethylenediamine and water as mixed solvent. The diameters of the nanorods increase and the lengths decrease with the Mn concentration. High resolution transmission electron microscopic images illustrate that a few cubic ZnS:Mn nanoparticles arise along with hexagonal nanorods on high Mn concentration. The samples set off yellow-orange emission at 590 nm, characteristic of 4T→6A1 transition of Mn2+ at Td symmetry in ZnS. Electron spin resonance spectrum of the nanorods shows that high Mn concentrations produce a broad envelope, whereas six-line hyperfine appears for lower Mn concentrations. These results together with the magnetization curves indicate that all the ZnS:Mn samples are paramagnetic even down to 4 K, which suggests that the ZnS:Mn is not suitable for dilute magnetic semiconductor.
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Zuo, M., Tan, S., Li, G. et al. Structure characterization, magnetic and photoluminescence properties of Mn doped ZnS nanocrystalline. Sci. China Phys. Mech. Astron. 55, 219–223 (2012). https://doi.org/10.1007/s11433-011-4595-3
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DOI: https://doi.org/10.1007/s11433-011-4595-3