Scintillation study of ZnWO4 single crystals

Oi, Tetsu; Takagi, Kazumasa; Fukazawa, T.

doi:10.1063/1.91452

Cited by 144 publications

(38 citation statements)

References 8 publications

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“…It is a technologically important material, finding applications, e.g., in scintillation detectors, laser-active hosts, optical fibers, sensors, and phase-change optical recording media. [11][12][13][14][15][16][17] Since the discovery of the photocatalytic activity of metal tungstates under solar illumination, these semiconductor photocatalysts have been considered as promising candidates for potential application in elimination of contaminants from water using solar energy. As an important kind of tungstate, zinc tungstate (ZnWO 4 ) with prototypical wolframite structure has been widely investigated due to its high chemical stability, good resistance to light radiation, relatively high catalytic activity, low cost, and commercial availability.…”

Section: Introductionmentioning

confidence: 99%

Precipitation Synthesis, Characterization, Morphological Control, and Photocatalyst Application of ZnWO4 Nanoparticles

Hosseinpour-Mashkani

Maddahfar

Sobhani‐Nasab

2016

Journal of Elec Materi

102

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Zinc tungstate nanoparticles have been successfully synthesized by a precipitation method in the presence of different polymeric surfactants. This study aimed to investigate the effect of different solvents and polymeric surfactants such as carboxymethyl cellulose, polyethylene glycol, and polyvinyl alcohol on the morphology, particle size, and crystal structure of the final product. The as-synthesized products were characterized by powder x-ray diffraction analysis, scanning electron microscopy, ultraviolet-visible spectroscopy, Fourier-transform infrared spectroscopy, transmission electron microscopy, and energy-dispersive x-ray spectroscopy techniques. Furthermore, the hysteresis loop of the zinc tungstate nanoparticles at room temperature revealed paramagnetic behavior. Photocatalysis results revealed that maximum methyl orange decolorization of 85% was achieved with ZnWO 4 nanoparticles in 240 min under visible-light irradiation. The saturation magnetization, remanent magnetization, and coercivity of the ZnWO 4 nanoparticles were 0.003 emu/g, 0.0005 emu/g, and 110 Oe, respectively.

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Section: Introductionmentioning

confidence: 99%

Precipitation Synthesis, Characterization, Morphological Control, and Photocatalyst Application of ZnWO4 Nanoparticles

Hosseinpour-Mashkani

Maddahfar

Sobhani‐Nasab

2016

Journal of Elec Materi

102

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“…Tungstates having general formula A 2+ WO 4 are extremely interesting compounds, which find many practical applications as scintillators [1,2,3], optical fibres [4], solid state Raman lasers [5,6], catalysts [7], high-temperature solid lubricants [8], gas sensors [9], and phase-change optical memories [10]. Among them wolframite-type ZnWO 4 , also known as mineral sanmartinite, has attracted recently a considerable interest both from experimental and theoretical points of view [11,12,13,14] due to optical and catalytic properties as well as possibility of preparation in nanosized [9,15] and thin film forms [10,16,17].…”

Section: Introductionmentioning

confidence: 99%

Static and dynamic structure of ZnWO4 nanoparticles

Kalinko

Kuzmin

2011

Journal of Non-Crystalline Solids

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Static and dynamic structure of ZnWO 4 nanoparticles, synthesized by co-precipitation technique, has been studied by temperature dependent x-ray absorption spectroscopy at the Zn K-edge and W L 3 -edge. The complementary experimental techniques, such as x-ray powder diffraction, Raman and photoluminescence spectroscopies, have been used to understand the variation of vibrational, optical, and structural properties of nanoparticles, compared to microcrystalline ZnWO 4 . Our results indicate that the structure of nanoparticles experiences strong relaxation leading to the significant distortions of the WO 6 and ZnO 6 octahedra, being responsible for the changes in optical and vibrational properties.

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“…ZnWO 4 is attractive for application as a promising scintillator because of its high scintillation efficiency and low afterglow [2].…”

Section: Introductionmentioning

confidence: 99%

Formation of luminescence centres under excitation with electron beams in PbWO ₄ and ZnWO ₄ crystals

Chernov

Millers

Grigorjeva

2005

phys. stat. sol. (c)

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PACS 78.55.Hx, 78.90+t The leading edge of intrinsic luminescence pulse in PbWO 4 and ZnWO 4 single crystals is studied. The rise of luminescence intensity is observed after excitation with electron beam pulse. The luminescence rise is shown to be a result of luminescence center formation via electron-hole recombination within spatially correlated pairs. An electron of a geminate electron-hole pair of PbWO 4 crystal self-traps and stimulates self-trapping of a hole at a close distance. In the ZnWO 4 crystal a hole of a geminate electron-hole pair self-traps and stimulates self-trapping of the electron producing a W 5+ center at a short distance. The risetime of luminescence depends on spatial separation of recombining components. It is short even at 80 K (100 ns in PbWO 4 and 10 ns in ZnWO 4 ). The reasons for different rise time and different spatial distribution of electron and hole self-trapped centers are discussed.

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Scintillation study of ZnWO4 single crystals

Cited by 144 publications

References 8 publications

Precipitation Synthesis, Characterization, Morphological Control, and Photocatalyst Application of ZnWO4 Nanoparticles

Precipitation Synthesis, Characterization, Morphological Control, and Photocatalyst Application of ZnWO4 Nanoparticles

Static and dynamic structure of ZnWO4 nanoparticles

Formation of luminescence centres under excitation with electron beams in PbWO ₄ and ZnWO ₄ crystals

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Scintillation study of ZnWO4 single crystals

Cited by 144 publications

References 8 publications

Precipitation Synthesis, Characterization, Morphological Control, and Photocatalyst Application of ZnWO4 Nanoparticles

Precipitation Synthesis, Characterization, Morphological Control, and Photocatalyst Application of ZnWO4 Nanoparticles

Static and dynamic structure of ZnWO4 nanoparticles

Formation of luminescence centres under excitation with electron beams in PbWO 4 and ZnWO 4 crystals

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Formation of luminescence centres under excitation with electron beams in PbWO ₄ and ZnWO ₄ crystals