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Published on: December 15, 2023
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Application of GRID to Foreign Atom Localization in Single Crystals
Summary
Gamma Ray Induced Doppler broadening (GRID) spectroscopy precisely located foreign erbium atoms within YAP single crystals. The study confirmed erbium
Area of Science:
- Solid-state physics
- Materials science
- Nuclear spectroscopy
Background:
- Accurate localization of impurity atoms in single crystals is crucial for understanding material properties.
- Gamma Ray Induced Doppler broadening (GRID) spectroscopy offers a potential method for site-specific impurity analysis.
- Yttrium aluminum perovskite (YAP) serves as a model system for studying rare-earth element incorporation.
Purpose of the Study:
- To demonstrate the application of GRID spectroscopy for foreign atom localization in single crystals.
- To determine the specific crystallographic site occupied by erbium (Er) impurities in YAP.
- To discuss the necessary nuclear parameters for effective GRID spectroscopy of impurity atoms.
Main Methods:
- Utilized Gamma Ray Induced Doppler broadening (GRID) spectroscopy.
- Analyzed the Doppler broadened secondary gamma (γ) line.
- Investigated two distinct crystalline directions within the YAP single crystal.
Main Results:
- Successfully applied GRID spectroscopy to localize erbium (Er) in YAP single crystals.
- Determined that erbium impurities are localized on the Yttrium (Y) site within the YAP crystal lattice.
- Established the feasibility of using GRID spectroscopy for site-specific impurity analysis.
Conclusions:
- GRID spectroscopy is an effective technique for determining the crystallographic site of foreign atoms in single crystals.
- Erbium impurities preferentially occupy the Y site in YAP, influencing crystal properties.
- The study provides insights into the conditions required for applying GRID spectroscopy to various impurity-host systems.
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