Nonstoichiometry, Structure, and Electrical Properties of "SrPrO_3"
Abstract
The single-phase composition with the perovskite structure type in the Sr−Pr−O system has been identified as (Sr₀.₉₃₅Pr₀.₀₄₃□₀.₀₂₂)Pr₁.₀O₃ from neutron diffraction refinements, chemical analysis, and thermogravimetric analysis. The cation deficient oxide crystallizes in a GdFeO3-type orthorhombic structure, space group Pbnm, with lattice parameters a = 5.988 00(17), b = 6.121 36(17), c = 8.548 58(24) Å, and Z = 4 at 300 K. Thermogravimetric analysis confirms that the compound is not oxygen deficient. (Sr₀.₉₃₅Pr₀.₀₄₃)Pr₁.₀O₃ exhibits semiconducting behavior. The bulk (grain interior) conductivity at 36 °C is 5.2 × 10⁻⁵ S cm⁻¹ with an activation energy for charge transport of 0.26 eV.
Additional Information
Copyright © 2005 American Chemical Society. Received April 27, 2005. Revised Manuscript Received June 29, 2005. Publication Date (Web): August 31, 2005. CM050895K. This work was supported by DOE office of Energy Efficiency and Renewable Energy. The authors gratefully acknowledge the assistance of Dr. Tetsuya Uda with chemical analysis and for valuable discussions.Attached Files
Published - Nonstoich,_structure_and_electrical_props_of_SrPrO3.pdf
Supplemental Material - cm050895ksi20050629_010526.cif
Supplemental Material - cm050895ksi20050629_010556.cif
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Additional details
- Alternative title
- Nonstoichiometry, Structure, and Electrical Properties of SrPrO3
- Eprint ID
- 42729
- Resolver ID
- CaltechAUTHORS:20131125-162533441
- Department of Energy (DOE)
- Created
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2013-11-27Created from EPrint's datestamp field
- Updated
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2023-10-25Created from EPrint's last_modified field