Journal article
Irreversible phase transitions due to laser-based T-jump heating of precursor Eu:ZrO2/Tb:Y2O3 core/shell nanoparticles
Journal of solid state chemistry, Vol.229, pp.350-357
09/01/2015
Abstract
Amorphous precursors of Eu-doped-ZrO2/Tb-doped-Y2O3 (p-Eu:ZrO2/p-Tb:Y2O3) core/shell nanoparticles are rapidly heated to temperatures between 200 degrees C and 950 degrees C for periods between 2 s and 60 s using a CO2 laser. During this heating process the nanoparticles undergo irreversible phase changes. The fluorescence spectra due to Eu3+ dopants in the core and Tb3+ dopants in the shell are used to identify distinct phases within the material and to generate time/temperature phase diagrams. Such phase diagrams can potentially help to determine unknown time/temperature histories in thermosensor applications. (C) 2015 Elsevier Inc. All rights reserved.
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Details
- Title
- Irreversible phase transitions due to laser-based T-jump heating of precursor Eu:ZrO2/Tb:Y2O3 core/shell nanoparticles
- Creators
- Ray Gunawidjaja - Washington State UniversityHelena Diez-y-Riega - Washington State UniversityHergen Eilers - Washington State University Spokane
- Publication Details
- Journal of solid state chemistry, Vol.229, pp.350-357
- Academic Unit
- Institute for Shock Physics
- Publisher
- Elsevier
- Number of pages
- 8
- Grant note
- HDTRA1-10-1-0005 / Defense Threat Reduction Agency; United States Department of Defense
- Identifiers
- 99900876939201842
- Language
- English
- Resource Type
- Journal article