検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

${it In-situ}$ observation and analysis of solid-state diffusion and liquid migration in a crystal growth system; A Segregation-driven diffusion couple

結晶成長系における固体拡散と液体移動のその場観察と解析; 偏析駆動型拡散カップル

Tremsin, A. S.*; Perrodin, D.*; Losko, A. S.*; Vogel, S. C.*; 篠原 武尚   ; 及川 健一   ; Bizarri, G. A.*; Bourret, E. D.*; Peterson, J. H.*; Wang, K. P.*; Derby, J. J.*

Tremsin, A. S.*; Perrodin, D.*; Losko, A. S.*; Vogel, S. C.*; Shinohara, Takenao; Oikawa, Kenichi; Bizarri, G. A.*; Bourret, E. D.*; Peterson, J. H.*; Wang, K. P.*; Derby, J. J.*

Energy-resolved neutron imaging is employed for ${it in situ}$ measurements of dopant transport in a simple experiment performed before the crystal growth of the scintillator BaBrCl:5%Eu via a vertical gradient freeze technique. During a stabilization period preceding growth, we observed the diffusion of Eu from the solid phase into the melt over a period of approximately 4 h. Comparing the measured centerline concentration profile with a mathematical model for the system, we estimate the solid-state diffusivity of Eu in BaBrCl as $$D$$$$_{1}$$ = 1.9 $$times$$ 10$$^{-10}$$ m$$^{2}$$/s and an upper limit for the liquid-phase diffusivity of Eu in the melt as $$D$$$$_2^{*}$$ = 2.5 $$times$$ 10$$^{-10}$$ m$$^{2}$$/s, at temperatures near the melting point. We compare this experiment, where diffusion is driven by a concentration discontinuity arising from segregation, to the classical diffusion couple technique.

Access

:

- Accesses

InCites™

:

パーセンタイル:38.18

分野:Materials Science, Multidisciplinary

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.