Abstract
ZnWO4:Sm powders with a Sm content of 0 to 10 at. pct have been prepared with wet chemical methods, and a variation of their luminescence property with the Sm content was studied for the first time. X-ray diffraction (XRD) analysis indicated that the synthesized powders all were single-phase sanmartinite ZnWO4 with monoclinic structure. The doped Sm3+ ions have not caused any significant change in the host structure, indicating Sm3+ ions were incorporated in the ZnWO4 structure. A scanning electron microscope (SEM) micrograph indicated that powders had uniform morphology and particle size approximately 10 to 150 nm, which decreased with increasing Sm3+ content. The synthesized ZnWO4 nanopowders showed broad emissions at blue-green bands near 460 nm and red emissions at 568.4 nm, 610.4 nm, and 649.4 nm. The blue-green emission decreased with increase in Sm3+ content, and the red emission reached maximum at Sm3+ content of 5 at. pct.
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Acknowledgments
The author thanks Ms. H. Tian of the Northwest Institute for Non-Ferrous Metal Research for her kind assistance in SEM measurement and Dr. Y. B. Qiao for his kind assistance in luminescence measurements.
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Manuscript submitted December 1, 2010.
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He, H.Y. Luminescence Property of ZnWO4:Sm Nanopowders Synthesized with Wet Chemical Methods. Metall Mater Trans B 43, 662–666 (2012). https://doi.org/10.1007/s11663-012-9635-5
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DOI: https://doi.org/10.1007/s11663-012-9635-5