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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 3, Iss. 7 — Jul. 1, 2013
  • pp: 908–912

Two-step sintering of Gd0.3Lu1.6Eu0.1O3 transparent ceramic scintillator

Zachary Seeley, Nerine Cherepy, and Stephen Payne  »View Author Affiliations

Optical Materials Express, Vol. 3, Issue 7, pp. 908-912 (2013)

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Transparent ceramic scintillators with the composition Gd0.3Lu1.6Eu0.1O3 (GLO:Eu) have been prepared by different sintering profiles: a traditional profile consisting of a slow ramp followed by a dwell, and a two-step profile consisting of a fast ramp and short dwell followed by a long dwell at a lower temperature. A subsequent Hot Isostatic Press (HIP) step was used to achieve full density and transparency. Two-step sintering allowed full transparency to be achieved after HIPing at 1525°C, while traditionally sintered samples required 1850°C in the HIP to achieve high transparency indicating that two-step sintering is successful in maintaining a small grain size and therefore allowing densification to be decoupled from grain growth during the low temperature HIP step. HIPing at elevated temperatures between 1525 and 1850°C resulted in rapid grain growth from sub-micron to ~300 µm grains. Radioluminescence spectra show negligible difference between samples with sub-micron grain size and those with 300 µm grains.

© 2013 OSA

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(260.3800) Physical optics : Luminescence
(290.5930) Scattering : Scintillation

ToC Category:
Fluorescent and Luminescent Materials

Original Manuscript: April 4, 2013
Revised Manuscript: May 20, 2013
Manuscript Accepted: May 29, 2013
Published: June 4, 2013

Virtual Issues
Optical Ceramics (2013) Optical Materials Express

Zachary Seeley, Nerine Cherepy, and Stephen Payne, "Two-step sintering of Gd0.3Lu1.6Eu0.1O3 transparent ceramic scintillator," Opt. Mater. Express 3, 908-912 (2013)

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