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Title: Interpretation of thermoelectric properties of Cu substituted LaCoO{sub 3} ceramics

The thermoelectric properties of LaCo{sub 1−x}Cu{sub x}O{sub 3−δ} is theoretically analyzed, it is observed that thermoelectric figure of merit ZT (=S{sup 2}σT/κ) is maximized by Cu substitution in LaCoO{sub 3} Ceramics at x=0.15. The lattice thermal conductivity and thermoelectric power were estimated by the scattering of phonons with defects, grain boundaries, electrons and phonons to evaluate the thermoelectric properties. We found that Cu substitution increase the phonon scattering with grain boundaries and defects which significantly increase the thermoelectric power and decrease the thermal conductivity. The present numerical analysis will help in designing more efficient thermoelectric materials.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Department of Physics, National Defence Academy, Khadakwasala, Pune -411023, India and Shri Vaishnav Institute of Technology and Science, Baroli, Indore -453331 (India)
  2. Department of Physics, Holkar Science College, Indore 452001 (India)
  3. Shri Vaishnav Institute of Technology and Science, Baroli, Indore -453331 (India)
  4. School of Studies in Physics, Vikram University, Ujjain 456010 (India)
Publication Date:
OSTI Identifier:
22269593
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CERAMICS; DEFECTS; DESIGN; GRAIN BOUNDARIES; NUMERICAL ANALYSIS; PHONONS; SCATTERING; THERMAL CONDUCTIVITY; THERMOELECTRIC MATERIALS; THERMOELECTRIC PROPERTIES