Journal article
Optical and Morphological Characterization of Tb0.01Zr0.99O2/(Precursor Eu0.02Y1.98O3) Core/Shell Nanoparticles as Temperature Sensors in Fast Heating Events
Journal of physical chemistry. C, Vol.118(10), pp.5563-5569
03/13/2014
Abstract
We characterize luminescent Tb0.01Zr0.99O2/(precursor Eu0.02Y1.98O3) core/shell nanoparticles as potential temperature sensors in fast heating events. The core of the nanoparticles consists of crystalline Tb0.01Zr0.99O2, while the shell is an amorphous Eu0.02Y1.98O3 precursor. When subjected to a brief thermal event, the crystalline zirconia core does not undergo any significant phase changes, whereas the yttria precursor shell undergoes an amorphous to crystalline phase change. Using this configuration, the emission intensity due to the Tb3+ ions in the ZrO2 core can be used as a reference. The emission intensity of the D-5(0) -> F-7(2) transition of the Eu3+ ion in the initially amorphous yttria precursor increases with increasing temperature, providing an indicator for temperature. In addition, it is found that the emission intensity of the D-5(0) -> F-7(1) transition of the Eu3+ ion does not depend on temperature and can also be used as a reference to determine temperature.
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Details
- Title
- Optical and Morphological Characterization of Tb0.01Zr0.99O2/(Precursor Eu0.02Y1.98O3) Core/Shell Nanoparticles as Temperature Sensors in Fast Heating Events
- Creators
- Ray Gunawidjaja - Washington State UniversityThandar Myint - Washington State University SpokaneHergen Eilers - Washington State University Spokane
- Publication Details
- Journal of physical chemistry. C, Vol.118(10), pp.5563-5569
- Academic Unit
- Institute for Shock Physics
- Publisher
- Amer Chemical Soc
- Number of pages
- 7
- Grant note
- HDTRA1-10-1-0005 / Defense Threat Reduction Agency; United States Department of Defense
- Identifiers
- 99900876940801842
- Language
- English
- Resource Type
- Journal article