Evidence of the inhomogeneous Ce3+ distribution across grain boundaries in transparent polycrystalline Ce3+-Doped (Gd,Y) 3Al5O12 garnet optical ceramics

Wei Zhao, Cedric Mancini, David Amans, Georges Boulon, Thierry Epicier, Yin Min, Hideki Yagi, Takagimi Yanagitani, Takayuki Yanagida, Akira Yoshikawa

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30 Citations (Scopus)

Abstract

This paper characterizes the inhomogeneous rare earth activator distribution across grain boundaries in transparent rare earth doped optical ceramics. Ce3+ has been selected due to its high intensity fluorescence in visible range under blue or UV excitations, especially in (Gd,Y)3Al5O12 disordered garnet ceramic for scintillator application. Optical spectroscopy and visualization of grains and grain boundaries based on spatially resolved techniques as imaging confocal microscopy (ICM) and transmission electronic microscopy (TEM) have been used for 0.5% Ce3+-doped (Gd,Y)3Al5O12 ceramic. A strong Ce3+ segregation and spatial distribution between grains and grain boundaries were observed.

Original languageEnglish
Article number022602
JournalJapanese journal of applied physics
Volume49
Issue number2 Part 1
DOIs
Publication statusPublished - 2010 Jan 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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