Nd-doped CaWO4 nanocrystals—synthesis and characterization. (11th August 2017)

• Record Type: Journal Article
• Authors: Suneetha, P; Rajesh, Ch; Ramana, M V
• Is Part Of: Materials research express. Volume 4:Number 8(2017)
• Publication Date: 2017-08-11
• Subjects: nanocrystals -- calcium tungstate -- rare earth ions -- photoluminescence; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/aa7e41
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: This paper reports the synthesis of neodymium (Nd)-doped calcium tungstate (CaWO4 ) nanocrystals (NCs). The thus synthesized NCs were analyzed for phase identification using x-ray diffraction (XRD). The XRD pattern reveals that the formed NCs are in the I41 /a space group, and their average size is around 47 nm. A scanning electron microscope (SEM) image shows that the NCs are in the form of rectangular shapes. The presence of rare earth ions in the Nd:CaWO4 NCs is confirmed by energy dispersive analysis of the x-rays (EDAX). To further confirm the presence of rare earth ions, photoluminescence and photoluminescence excitation studies were carried out on these NCs. Emissions related to Nd 3+ ions were observed under 587 nm excitation, and the peaks were assigned to the characteristic 4 F3/2 – 4 I9/2, 4 F3/2 – 4 I11/2 and 4 F3/2 – 4 I13/2 transitions of the Nd ions.