Crystal Growth and Phase Formation of High-Entropy Rare-Earth Aluminum Perovskites
Abstract
In this work, we demonstrate for the first time the crystal growth of high-entropy rare-earth (RE) aluminum perovskites (REAlO3) using the micro-pulling-down method to inform future exploration of functional crystals. To determine how composition affects phase formation, we formulate equiatomic compositions containing five REs from the following list: Lu, Yb, Tm, Er, Y, Ho, Dy, Tb, Gd, Eu, Sm, Nd, Pr, Ce, La. To test whether combinations of REs with similar ionic radii may favor a single phase, compositions containing REs with consecutive or nonconsecutive ionic radius values were formulated. Powder and single-crystal X-ray diffraction indicate that crystals containing only REs with similar ionic radii that form orthorhombic single-RE REAlO3 are a single phase. Crystals containing REs with dissimilar ionic radii or mixtures of REs that form orthorhombic, rhombohedral, and tetragonal single-RE REAlO3 are a mixture of phases. The elemental distribution in single-phase crystals analyzed via electron probe microanalysis confirms no evidence of preferential incorporation of any of the constituent REs. The distribution and composition of secondary phases were analyzed via scanning electron microscopy and energy dispersive spectroscopy; secondary phases were seen as a small region in the center of the crystals with branching features closer to the outer surface.
- Authors:
-
[1];
[2];
- Univ. of Tennessee, Knoxville, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- OSTI Identifier:
- 1909073
- Grant/Contract Number:
- AC05-00OR22725; DMR 1846935
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Crystal Growth and Design
- Additional Journal Information:
- Journal Volume: 23; Journal Issue: 1; Journal ID: ISSN 1528-7483
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; crystal structure; crystallization; crystals; diffraction; mixtures
Citation Formats
Pianassola, Matheus, Chakoumakos, Bryan C., Melcher, Charles L., and Zhuravleva, Mariya. Crystal Growth and Phase Formation of High-Entropy Rare-Earth Aluminum Perovskites. United States: N. p., 2022.
Web. doi:10.1021/acs.cgd.2c01130.
Pianassola, Matheus, Chakoumakos, Bryan C., Melcher, Charles L., & Zhuravleva, Mariya. Crystal Growth and Phase Formation of High-Entropy Rare-Earth Aluminum Perovskites. United States. https://doi.org/10.1021/acs.cgd.2c01130
Pianassola, Matheus, Chakoumakos, Bryan C., Melcher, Charles L., and Zhuravleva, Mariya. Fri .
"Crystal Growth and Phase Formation of High-Entropy Rare-Earth Aluminum Perovskites". United States. https://doi.org/10.1021/acs.cgd.2c01130. https://www.osti.gov/servlets/purl/1909073.
@article{osti_1909073,
title = {Crystal Growth and Phase Formation of High-Entropy Rare-Earth Aluminum Perovskites},
author = {Pianassola, Matheus and Chakoumakos, Bryan C. and Melcher, Charles L. and Zhuravleva, Mariya},
abstractNote = {In this work, we demonstrate for the first time the crystal growth of high-entropy rare-earth (RE) aluminum perovskites (REAlO3) using the micro-pulling-down method to inform future exploration of functional crystals. To determine how composition affects phase formation, we formulate equiatomic compositions containing five REs from the following list: Lu, Yb, Tm, Er, Y, Ho, Dy, Tb, Gd, Eu, Sm, Nd, Pr, Ce, La. To test whether combinations of REs with similar ionic radii may favor a single phase, compositions containing REs with consecutive or nonconsecutive ionic radius values were formulated. Powder and single-crystal X-ray diffraction indicate that crystals containing only REs with similar ionic radii that form orthorhombic single-RE REAlO3 are a single phase. Crystals containing REs with dissimilar ionic radii or mixtures of REs that form orthorhombic, rhombohedral, and tetragonal single-RE REAlO3 are a mixture of phases. The elemental distribution in single-phase crystals analyzed via electron probe microanalysis confirms no evidence of preferential incorporation of any of the constituent REs. The distribution and composition of secondary phases were analyzed via scanning electron microscopy and energy dispersive spectroscopy; secondary phases were seen as a small region in the center of the crystals with branching features closer to the outer surface.},
doi = {10.1021/acs.cgd.2c01130},
journal = {Crystal Growth and Design},
number = 1,
volume = 23,
place = {United States},
year = {Fri Dec 09 00:00:00 EST 2022},
month = {Fri Dec 09 00:00:00 EST 2022}
}
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