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Journal of Nanomaterials
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Journal of Nanomaterials
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2018
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Article
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Fig 3
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Research Article
Synthesis of Tetragonal Phase LiYF
4
: Yb and Tm Microcrystals with Strong UV Upconversion Fluorescence
Figure 3
SEM image of the samples with different reaction time (a–d): 1 hour, 2 hours, 6 hours, and 16 hours.
(a)
(b)
(c)
(d)