First-principles study on the electronic, optical and thermodynamic properties of ABO3 (A = La,Sr, B = Fe,Co) perovskites
Abstract
The electronic, optical and thermodynamic properties of ABO3 (A = La,Sr, B = Fe,Co) perovskites are investigated using first-principles calculations. The obtained results indicate that SrCoO3 and SrFeO3 are metals, while LaCoO3 and LaFeO3 are insulators and all of them exhibit strong hybridization of the Fe/Co-3d and O-2p orbitals. By correlating the energy band structures with the peaks of the imaginary part of the dielectric function, we obtained the origin of each electron excitation to provide information about the active bands for the corresponding optical transitions observed in the experiment. Moreover, the Debye temperatures θD obtained from the phonon frequencies are comparable to the available data. In conclusion, the thermodynamic properties of the Helmholtz free energy F, entropy S, and constant-volume heat capacity Cv are investigated based on the phonon spectra.
- Authors:
-
- Chinese Academy of Sciences, Hefei (People's Republic of China)
- Chinese Academy of Sciences, Hefei (People's Republic of China); Univ. of Science and Technology of China, Hefei (People's Republic of China); Beijing Computational Science Research Center, Beijing (People's Republic of China)
- Beijing Computational Science Research Center; Beijing 100084; P. R. China
- National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
- Publication Date:
- Research Org.:
- National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research
- Sponsoring Org.:
- USDOE; National Science Foundation of China (NSFC)
- OSTI Identifier:
- 1404702
- Report Number(s):
- NETL-PUB-21288
Journal ID: ISSN 2046-2069; RSCACL
- Grant/Contract Number:
- 11534012; U1230202; 2012CB933702
- Resource Type:
- Accepted Manuscript
- Journal Name:
- RSC Advances
- Additional Journal Information:
- Journal Volume: 7; Journal Issue: 62; Journal ID: ISSN 2046-2069
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 01 COAL, LIGNITE, AND PEAT; 03 NATURAL GAS; 25 ENERGY STORAGE; 24 POWER TRANSMISSION AND DISTRIBUTION; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 54 ENVIRONMENTAL SCIENCES; optical and thermodynamic properties; ABO3 (A=La,Sr, B=Fe,Co) perovskites; density functional theory; ab initio thermodynamics
Citation Formats
Jia, Ting, Zeng, Zhi, Lin, H. Q., Duan, Yuhua, and Ohodnicki, Paul. First-principles study on the electronic, optical and thermodynamic properties of ABO3 (A = La,Sr, B = Fe,Co) perovskites. United States: N. p., 2017.
Web. doi:10.1039/c7ra06542f.
Jia, Ting, Zeng, Zhi, Lin, H. Q., Duan, Yuhua, & Ohodnicki, Paul. First-principles study on the electronic, optical and thermodynamic properties of ABO3 (A = La,Sr, B = Fe,Co) perovskites. United States. https://doi.org/10.1039/c7ra06542f
Jia, Ting, Zeng, Zhi, Lin, H. Q., Duan, Yuhua, and Ohodnicki, Paul. Tue .
"First-principles study on the electronic, optical and thermodynamic properties of ABO3 (A = La,Sr, B = Fe,Co) perovskites". United States. https://doi.org/10.1039/c7ra06542f. https://www.osti.gov/servlets/purl/1404702.
@article{osti_1404702,
title = {First-principles study on the electronic, optical and thermodynamic properties of ABO3 (A = La,Sr, B = Fe,Co) perovskites},
author = {Jia, Ting and Zeng, Zhi and Lin, H. Q. and Duan, Yuhua and Ohodnicki, Paul},
abstractNote = {The electronic, optical and thermodynamic properties of ABO3 (A = La,Sr, B = Fe,Co) perovskites are investigated using first-principles calculations. The obtained results indicate that SrCoO3 and SrFeO3 are metals, while LaCoO3 and LaFeO3 are insulators and all of them exhibit strong hybridization of the Fe/Co-3d and O-2p orbitals. By correlating the energy band structures with the peaks of the imaginary part of the dielectric function, we obtained the origin of each electron excitation to provide information about the active bands for the corresponding optical transitions observed in the experiment. Moreover, the Debye temperatures θD obtained from the phonon frequencies are comparable to the available data. In conclusion, the thermodynamic properties of the Helmholtz free energy F, entropy S, and constant-volume heat capacity Cv are investigated based on the phonon spectra.},
doi = {10.1039/c7ra06542f},
journal = {RSC Advances},
number = 62,
volume = 7,
place = {United States},
year = {Tue Aug 08 00:00:00 EDT 2017},
month = {Tue Aug 08 00:00:00 EDT 2017}
}
Web of Science
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Works referencing / citing this record:
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