The radial distribution of dopant (Cr, Nd, Yb, or Ce) in yttrium aluminum garnet (Y3Al5O12) single crystals grown by the micro-pulling-down method

Simura, Rayko; Yoshikawa, Akira; Uda, Satoshi

doi:10.1016/j.jcrysgro.2009.07.012

Cited by 38 publications

(22 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The central region showed higher Cr concentration than the rim and Cr had a concentration almost twice the doping level. Simura et al reported radial Cr distribution of Cr:YAG crystals grown by the m-PD method [11]. The central region of Cr:YAG had a much higher concentration than the rim, which is consistent with our results.…”

Section: Crystal Growthsupporting

confidence: 92%

See 1 more Smart Citation

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

Sugiyama¹,

Yanagida²,

Totsuka³

et al. 2013

Journal of Crystal Growth

Self Cite

View full text Add to dashboard Cite

Section: Crystal Growthsupporting

confidence: 92%

“…The k value was 1.5, which was higher than 1. Simura et al calculated radial dopant distribution in the crystal for several k values [11]. If k is larger than 1 the dopant concentrates in the central region of the crystal.…”

Section: Crystal Growthmentioning

confidence: 99%

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

Sugiyama¹,

Yanagida²,

Totsuka³

et al. 2013

Journal of Crystal Growth

Self Cite

View full text Add to dashboard Cite

“…Details of the simulation model was described in [14]. The equilibrium segregation coefficient of the Ce ion in a YAG single crystal is much less than one [12] and the Ce ion retains preferentially in the melt rather than the crystal during the crystal growth. In the simulation, the melt is taken as an incompressible Newtonian fluid with constant viscosity and density.…”

Section: Simulation Model and Resultsmentioning

confidence: 99%

“…Therefore, inhomogeneity of the dopant distribution in the single crystals causes degradation of the optical and scintillation properties and uncertainty of the material parameters and material performance. Experimental and simulation results on the dopant distribution in the single crystals grown by the -PD method were discussed in the past [9][10][11][12][13]. The results indicated that the dopant concentration in the central parts (regarding cross-sectional cuts) was larger than that in the peripheral parts when the segregation coefficient, k, of the dopant exceeded unity (k > 1).…”

Section: Introductionmentioning

confidence: 99%

Improvement of dopant distribution in radial direction of single crystals grown by micro-pulling-down method

Yokota

Kudo

Chani

et al. 2017

Journal of Crystal Growth

Self Cite

View full text Add to dashboard Cite

Two iridium crucibles with one and five capillaries at a nozzle were developed for the growth of Ce-doped Y3Al5O12 [Ce:YAG] single crystals by the micro-pulling-down [-PD] method. The purpose of the study was to examine the effect of the capillary number on the Ce distribution in the radial direction of the crystals. The crystals grown from 2 mol% and 5 mol% Ce-doped YAG melts were then cut perpendicular to the growth direction and polished to produce specimens suitable for the measurement of Ce distribution. The Ce:YAG crystals grown using the crucible with one capillary [Ce:YAG(1C)] had greater Ce content in the central portion of the crystal when compared to its peripheral parts. On the other hand, in the case of the Ce:YAG crystal grown using the crucible with five capillaries [Ce:YAG(5C)], the increased Ce concentration was detected in five specimen sections positioned just below the capillaries. The results indicated that increase of the number of capillaries is effective practice that results in an improvement of the radial homogeneity of the single crystals grown by the -PD method.

show abstract

“…Simura et al calculated the radial dopant distribution in yttrium aluminum garnet (YAG) single crystals grown by the m-PD method using the crucible with a die [9]. The dopant concentration is higher at the rim than that in the core for the segregation coefficient (k 0 ) o1.…”

Section: Dopant Segregationmentioning

confidence: 99%