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Crystal growth and scintillating properties of (Pr,Si)-doped YAlO3

✍ Scribed by M. Zhuravleva; A. Novoselov; E. Mihokova; J. A. Mares; A. Vedda; M. Nikl; A. Yoshikawa

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
243 KB
Volume
42
Category
Article
ISSN
0232-1300

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✦ Synopsis

This paper deals with Pr-doped and Pr, Si-codoped YAlO 3 single crystal growth by the micro-pulling-down method and investigation of their spectroscopic and scintillating properties. The Pr 3+ 5d-4f radioluminescence intensity is more than 10 times higher than that of Bi 4 Ge 3 O 12 standard sample, but the Si-codoping decreases it. Absorption spectra of as-grown and air-annealed Si,Pr-codoped YAlO 3 samples show along with an onset of 4f-5d transition round 230 nm the induced absorption band at 400 nm which possibly related to a hole center absorption (Pr 4+ or O -). Thermoluminescence measurements above the room temperature were performed in order to monitor deep electron traps. Strong concentration dependence of thermoluminescence was observed for Pr:YAlO 3 glow curves.

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