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Oxide thermoelectric materials: A structure-property relationship

IR@NAL: CSIR-National Aerospace Laboratories, Bangalore


Field	Value

Title	Oxide thermoelectric materials: A structure-property relationship

Creator	Nag, Abanti Shubha, V

Subject	Chemistry and Materials (General)

Description	Recent demand for thermoelectric materials for power harvesting from automobile and industrial waste heat requires oxide materials because of their potential advantages over intermetallic alloys in terms of chemical and thermal stability at high temperatures. Achievement of thermoelectric figure of merit equivalent to unity (ZT �1) for transition-metal oxides necessitates a second look at the fundamental theory on the basis of the structure–property relationship giving rise to electron correlation accompanied by spin fluctuation. Promising transition - metal oxides based on wide-bandgap semiconductors, perovskite and layered oxides have been studied as potential candidate n- and p-type materials. This paper reviews the correlation between the crystal structure and thermoelectric properties of transition-metal oxides. The crystal-site-dependent electronic configuration and spin degeneracy to control the thermopower and electron–phonon interaction leading to polaron hopping to control electrical conductivity is discussed. Crystal structure tailoring leading to phonon scattering at interfaces and nanograin domains to achieve low thermal conductivity is also highlighted.

Publisher	Minerals, Metals & Materials Society

Date	2014

Type	Journal Article PeerReviewed

Format	application/pdf application/pdf

Identifier	http://nal-ir.nal.res.in/12229/1/ja543.pdf http://nal-ir.nal.res.in/12229/2/ja543POST.pdf Nag, Abanti and Shubha, V (2014) Oxide thermoelectric materials: A structure-property relationship. Journal of Electronic Materials, 43 (4). pp. 962-977. ISSN 1543-186X

Relation	http://dx.doi.org/10.1007/s11664-014-3024-6 http://nal-ir.nal.res.in/12229/