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Author Sadhasivam, S. ♦ Rajesh, N. P.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ ABSORPTION SPECTROSCOPY ♦ COLOR CENTERS ♦ CRYSTAL GROWTH ♦ EMISSION SPECTROSCOPY ♦ FOURIER TRANSFORMATION ♦ GAMMA RADIATION ♦ INFRARED SPECTRA ♦ IRRADIATION ♦ LUMINESCENCE ♦ MONAZITES ♦ MONOCRYSTALS ♦ NEODYMIUM PHOSPHATES ♦ PHYSICAL RADIATION EFFECTS ♦ POTASSIUM PHOSPHATES ♦ SCANNING ELECTRON MICROSCOPY ♦ X-RAY DIFFRACTION
Abstract Highlights: • Inorganic NdPO{sub 4} crystal was grown first time using potassium polyphosphate (K{sub 6}P{sub 4}O{sub 13}) flux. • NdPO{sub 4} crystal is insoluble in water, non-hygroscopic and high radiation resistance favoring for actinides host. • Actinide immobilization can be made at 1273 K. • High yield of 1061 nm photon emission. - Abstract: Rare earth orthophosphate (NdPO{sub 4}) monazite single crystals were grown using high temperature flux growth method employing K{sub 6}P{sub 4}O{sub 13} (K{sub 6}) as molten solvent. Their structural parameters were studied using single crystal X-ray diffraction (XRD) method. The grown crystals were examined by SEM and EDX techniques for their homogeniousity and inclusion in the crystals. The influence of gamma irradiation in structural and optical absorption properties were studied by the powder XRD, FTIR and reflectance spectroscopy. The effect of gamma irradiation on luminescence properties was recorded. No significant structural change is observed up to 150 kGy gamma dose. The gamma ray induced charge trap in the crystal was saturated to 40 kGy dose. The luminescence intensity decreases with an increase in the irradiation. The emission of luminescence intensity stabilizes above 40 kGy gamma dose.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-02-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 74


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