Thermoelectric, electronic, optical and chemical bonding properties of Ba{sub 2}PrRuO{sub 6}: At temperature 7 K and 150 K

Journal Article · Thu Jan 15 00:00:00 EST 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2014.10.028· OSTI ID:22420791

Reshak, A. H. ^[1]; Khan, Wilayat ^[1]

---

1. New Technologies-Research Center, University of West Bohemia, Univerzitni 8, 306 14 Pilsen (Czech Republic)

Highlights: • DFT-FPLAPW method used for calculating the electronic structure. • The Fermi surface of BPRO (7 K and 150 K) is also calculated. • The complex dielectric function has been calculated. • Thermoelectric properties were also calculated using BoltzTraP code. • Power factor shows that both compounds are good thermoelectric materials at 600 K. - Abstract: We present first principles calculations of the band structure, density of states, electronic charge density, Fermi surface and optical properties of Ba{sub 2}PrRuO{sub 6} single crystals at two different temperatures. The atomic positions were optimized by minimizing the forces acting on the atoms. We have employed the full potential linear augmented plane wave method within local density approximation, generalized gradient approximation and Engel–Vosko generalized gradient approximation to treat the exchange correlation potential. The calculation shows that the compound is superconductor with strong hybridization near the Fermi energy level. Fermi surface is composed of two sheets. The calculated electronic specific heat capacities indicate, very close agreement with the experimental one. The bonding features of the compounds are analyzed using the electronic charge density in the (1 0 0) and (0–10) crystallographic planes. The dispersion of the optical constants was calculated and discussed. The thermoelectric properties are also calculated using the BoltzTrap code.

• OSTI ID: 22420791
• Journal Information: Materials Research Bulletin, Vol. 61; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
B CODES
BARIUM COMPOUNDS
CHARGE DENSITY
CHEMICAL BONDS
DENSITY OF STATES
DIELECTRIC MATERIALS
ELECTRONIC SPECIFIC HEAT
ELECTRONIC STRUCTURE
FERMI LEVEL
MONOCRYSTALS
OPTICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
RUTHENIUM OXIDES
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMOELECTRIC MATERIALS
THERMOELECTRIC PROPERTIES
WAVE PROPAGATION