Crystal growth and luminescence properties of Cr-doped YAlO3 single crystals

Sugiyama, Makoto; Yanagida, Takayuki; Totsuka, Daisuke; Yokota, Yuui; Futami, Yoshisuke; Fujimoto, Yutaka; Yoshikawa, Akira

doi:10.1016/j.jcrysgro.2011.11.021

Cited by 23 publications

(3 citation statements)

References 18 publications

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“…On the other hand, different weak peak (described as (P) in Fig. 4) was observed around 740 nm in the spectra of Cr:Gd50YAG, which is related to the emission of Cr 3+ incorporated into the perovskite phase [12].…”

Section: Resultsmentioning

confidence: 94%

Luminescent properties of Cr-doped (Gd , Y1−)3Al5O12 infra-red scintillator crystals

et al. 2014

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Cr-doped (Gd X Y 1-X ) 3 Al 5 O 12 (X = 0, 0.25, 0.50) crystals prepared by the micro-pulling down method were investigated to develop a infra-red scintillator for implantable patient dosimeter in radiation therapy. In order to evaluate their optical and scintillation performance, the following properties were measured: (i) transmittance between ultra-violet and near-infra red region, (ii) photoluminescence spectra under Xe-lamp excitation, (iii) X-ray excited radio-luminescence spectra. Cr:Y 3 Al 5 O 12 and Cr:(Gd 0.25 Y 0.75 ) 3 Al 5 O 12 crystals showed increased transmittance of 80 %, while Cr:(Gd 0.50 Y 0.50 ) 3 Al 5 O 12 had a lower transmittance of 40 % due to its polycrystalline structure. In addition, all the Cr:(Gd X Y 1-X ) 3 Al 5 O 12 crystals showed sharp scintillation luminescence peaks ascribed to Cr 3+ d-d transitions. Therefore, these results suggested that Cr:Y 3 Al 5 O 12 and Cr:(Gd 0.25 Y 0.75 ) 3 Al 5 O 12 crystals can be candidate materials © 2014. This manuscript version is made available under the Elsevier user license http://www.elsevier.com/open-access/userlicense/1.0/ 2 / 11 for the dosimeter use.

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Section: Resultsmentioning

confidence: 94%

Luminescent properties of Cr-doped (Gd , Y1−)3Al5O12 infra-red scintillator crystals

et al. 2014

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“…Tanto Premkumar y Col. [8] como Blosi y Col. [7] mencionan este hecho a diferencia del método convencional caro [9], como lo indican Sugiyama y Col. [10], posteriores estudios deben ser realizados.…”

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Síntesis De Yaio3 (Yap) Policristalino Por El Método De Combustión en Solución

Lazo

Paucarchuco

Loro

2018

TECNIA

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RESUMENSe presenta el método de combustión en solución y su aplicación para la síntesis de YAlO 3 (YAP), fueron usados como combustibles para la reacción de combustión y síntesis la urea y glicina, del YAP. Usando las técnicas de difracción de rayos X (XRD) por el método del polvo y microscopia electrónica de barrido (MEB) fueron analizadas la parte estructural y morfológica de las muestras obtenidas. Los difractogramas de Rayos X muestran una excelente correspondencia con lo reportado en la literatura para este material. Se suministran también los resultados de las muestras de material YAl x Cr x-1 O 3 , dopado con Cr 3+ con x = 0.001, 0.01, que exhiben picos de difracción dominantes debidos a la fase ortorrómbica de YAlO 3 . Keywords: YAP, YAlO3, Combustion method ABSTRACT The solution-combustion process is presented, as well as its application to the synthesis of YAlO3 (YAP). Urea and glycine were used as fuel for the combustion reaction and synthesis of the YAP. The structure and morphology of the obtained sample were analyzed using the X-ray diffraction (XRD) powder method and scanning electron microscopy (SEM

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“…The quantitative comparison of the light outputs of such slow scintillators was impossible, since the single gamma-ray photon counting method is not possible. In addition, we have reported slow red or NIR scintillators such as Cr:Y 3 Al 5 O 12 , 20) Nd:Lu 2 O 3 , 21) Nd:SrBr 2 , 22) and Cr:(Gd,Y) 3 Ga 5 O 12 . [23][24][25][26] Here, we note that the Tb 3+ emission is not suitable for the long fiber-read system since the Tb 3+ 4f-4f emission peaks are located between the blue and green regions where the transition losses should be significant.…”

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Fiber-read radiation monitoring system using an optical fiber and red-emitting scintillator for ultra-high-dose conditions

Kodama

Ohno

Morishita

et al. 2020

Appl. Phys. Express

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We have developed a remote scintillation detector using a CCD spectrometer and a red-emitting scintillator coupled with a 20 m optical fiber for ultra-high-dose conditions. Gamma rays were detected with a conventional deep-red-emitting ruby scintillator and Cs2HfI6, which is a novel material with 700 nm red emission and a high light output. The scintillators were irradiated with gamma rays from a 60Co source under an effective dose rate from ∼0.002 to ∼1 kSv h−1. The integrated area of the Cs2HfI6 emission spectra was larger than that of the ruby, and good linearity of the Cs2HfI6 signal as a function of dose rate was confirmed.

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Crystal growth and luminescence properties of Cr-doped YAlO3 single crystals

Cited by 23 publications

References 18 publications

Luminescent properties of Cr-doped (Gd , Y1−)3Al5O12 infra-red scintillator crystals

Luminescent properties of Cr-doped (Gd , Y1−)3Al5O12 infra-red scintillator crystals

Síntesis De Yaio3 (Yap) Policristalino Por El Método De Combustión en Solución

Fiber-read radiation monitoring system using an optical fiber and red-emitting scintillator for ultra-high-dose conditions

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