Combustion synthesis and characterization of dysprosium nano-composite melilite

Abstract

Light emitting nano-scale materials have attracted a great interest in recent days. In view of this, a nanocrystal solid luminescent composite material was prepared using combustion processing technique and its identity was analyzed and further investigated. The precursor reagents were measured using the single pan analytical balance. A sample was synthesized and its functional group was identified using the FTIR spectroscopy and XRD studies as having similar properties to those in Batch No. JCPDS No. 77-1149 and in Base Code AMCSD 0008032. Its photoluminescence spectrum identified peaks located at 476 nm, 578 nm and 615 nm that were attributed to electronic transition from ⁴$F_{\mathrm{9/2}}$ to ⁶H${}_{\mathrm{15/2}}$, from ⁴$F_{\mathrm{9/2}}$ to ⁶H${}_{\mathrm{13/2}}$ and from ⁴$F_{\mathrm{9/2}}$ to ⁶H${}_{\mathrm{11/2}}$ respectively as the finger blue-prints of dysprosium [Dy${}^{3+}$] ion. Its crystalline sizes and strains were calculated using the Debay Scherrer’s equation and analyzed using the UDM model. The findings showed that the prepared sample had a superior homogeneity and further that the Dy${}^{3+}$ influenced its formation. The mellite sample was identified to be Ca₂MgSi₂O₇:Dy${}^{3+}$. Further analysis on the sample suggested that was a potential white light emitting luminescent material just like Ca₂MgSi₂O₇:Tb${}^{3+}$ phosphor and Sr₂MgSi₂O₇:Dy${}^{3+}$ phosphor.