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Sr2MgSi2O7: Eu2+, Dy3+ was chosen for the investigation about the effect of grain surface on the long afterglow properties. Three pulverizing ways (manual grinding, ball milling and roller milling) were carried out to obtain different grain surface morphologies of particles. The most grains of the luminous powders obtained by roller milling are intact, while those obtained by ball milling are tattered...
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