Improvement of the quality of ZnWO4 single crystals for scintillation applications

Földvári, I.; Péter, Á.; Keszthelyi-Lándori, S.; Capelletti, R.; Cravero, I.; Schmidt, Ferdinand

doi:10.1016/0022-0248(86)90543-9

Cited by 41 publications

(8 citation statements)

References 15 publications

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“…An bin-atomizerQ pre-concentration method was elaborated in GFAAS [17] to achieve lower detection limits for the determinations. (4) Critical impurities (Fe [20,21], Cr and Na [21]) were determined in zinc tungstate after either dissolution in acids, or fusion with alkaline hydroxides by GFAAS [20,21] and flame atomic emission spectrometry (FAES) [21]. Matrix matching and/or standard addition methods were applied for calibration.…”

Section: Introductionmentioning

confidence: 99%

Analysis of yttrium aluminium borate crystals by solution-based methods: inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry

Bencs

Horváth

Varga

et al. 2004

Spectrochimica Acta Part B: Atomic Spectroscopy

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Section: Introductionmentioning

confidence: 99%

Analysis of yttrium aluminium borate crystals by solution-based methods: inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry

Bencs

Horváth

Varga

et al. 2004

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…The photoluminescent behavior of the Mo-analog, CaMoO 4 , is similar to that of CaWO 4 , with the broad band shifted into the green region [5,6]. Broad-band photoluminescence peaks in the region between 480 and 490 nm have also been observed in the wolframite family of tungstates, such as ZnWO 4 which exhibits a broad-band centered at 480 nm [7,8].…”

Section: Introductionmentioning

confidence: 76%

Structure, stability, and photoluminescence in the anti-perovskites Na3W1−Mo O4F (0≤x≤1)

Sullivan

Avdeev

Blom

et al. 2015

Journal of Solid State Chemistry

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a b s t r a c tSingle-phase ordered oxyfluorides Na 3 WO 4 F, Na 3 MoO 4 F and their mixed members Na 3 W 1 À x Mo x O 4 F can be prepared via facile solid state reaction of Na 2 MO 4 Á 2H 2 O (M¼ W, Mo) and NaF. Phases produced from incongruent melts are metastable, but lower temperatures allow for a facile one-step synthesis. In polycrystalline samples of Na 3 W 1 À x Mo x O 4 F, the presence of Mo stabilizes the structure against decomposition to spinel phases. Photoluminescence studies show that upon excitation with λ¼254 nm and λ¼365 nm, Na 3 WO 4 F and Na 3 MoO 4 F exhibit broad emission maxima centered around 485 nm. These materials constitute new members of the family of self-activating ordered oxyfluoride phosphors with anti-perovskite structures which are amenable to doping with emitters such as Eu 3 þ .

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“…Single crystals of ZnWO 4 were grown in Pt crucibles in air using a balance-controlled Czochralski technique [13]. The raw materials were analytical grade ZnO (REANAL) and WO 3 chemically produced from analytical grade Na 2 WO 4 [14]. EPR and ENDOR measurements were carried out using a BRUKER Spectrometer (Model ESP 300 E) in Giessen (Germany).…”

Section: Experimental Methods and Crystal Structurementioning

confidence: 99%

Al- and OH-related paramagnetic impurity centres in UV- or x-irradiated ZnWO₄single crystals

Watterich

Hofstaetter

Scharmann

et al. 2003

J. Phys.: Condens. Matter

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Using electron paramagnetic resonance (EPR) and in one case also electron nuclear double resonance new trapped electron and hole centres are characterised in ZnWO4 single crystals. In undoped and Al-doped ZnWO4 a new W5+-type defect is produced by UV- or x-irradiation at 77 K. The centre is stabilised by a nearby Al3+ impurity that is substituting for Zn2+. In ZnWO4:Al in addition to the above electron-type defect three kinds of hole-type centres created by x-irradiation at 77 K are also studied: one of these is assigned to an O− ion near a VZn–AlZn3+ complex, and the second to an O− ion near a VZn–OH− pair. The - and hydrogen super hyperfine (SHF) tensors of the latter centre have been published previously. Due to the higher concentration in the Al-doped crystal, SHF tensors of two W neighbours could also be determined. The third hole-type defect shows quartet SHF (I = 3/2) with a 100% abundant nucleus and therefore the O− in this centre is most likely stabilised by an Na+ impurity. Complete sets of EPR parameters are compared for trapped electron and trapped hole centres including previously characterised defects.

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Improvement of the quality of ZnWO4 single crystals for scintillation applications

Cited by 41 publications

References 15 publications

Analysis of yttrium aluminium borate crystals by solution-based methods: inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry

Analysis of yttrium aluminium borate crystals by solution-based methods: inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry

Structure, stability, and photoluminescence in the anti-perovskites Na3W1−Mo O4F (0≤x≤1)

Al- and OH-related paramagnetic impurity centres in UV- or x-irradiated ZnWO₄single crystals

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Improvement of the quality of ZnWO4 single crystals for scintillation applications

Cited by 41 publications

References 15 publications

Analysis of yttrium aluminium borate crystals by solution-based methods: inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry

Analysis of yttrium aluminium borate crystals by solution-based methods: inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry

Structure, stability, and photoluminescence in the anti-perovskites Na3W1−Mo O4F (0≤x≤1)

Al- and OH-related paramagnetic impurity centres in UV- or x-irradiated ZnWO4single crystals

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Al- and OH-related paramagnetic impurity centres in UV- or x-irradiated ZnWO₄single crystals