Thermoelectric properties of perovskites: Sign change of the Seebeck coefficient and high temperature properties

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F07%3A00098459" target="_blank" >RIV/68378271:_____/07:00098459 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Thermoelectric properties of perovskites: Sign change of the Seebeck coefficient and high temperature properties

Original language description

The change of the Seebeck coefficient S is exemplified in the LaCoO3 perovskites: a small hole doping result in a large positive Seebeck coefficient, while electron doping give a negative Seebeck coefficient at room temperature. At high temperature, theSeebeck coefficients of LaCoO3 and related compounds decrease to small values close to 20 ? V/K at 800 K due to the spin state transition. On the other hand, in the case of metallic-like samples as electron-doped manganites, the properties can be described up to high T in terms of a band metal. Due to the linear variation of S as a function of T and the almost constant value of r?, the ratio S2/? which is crucial for high temperature applications, increases

Czech name

Termoelektrické vlastnosti perovskitů: změna znaménka Seebeckova jevu a vysokoteplotní vlastnosti

Czech description

The change of the Seebeck coefficient S is exemplified in the LaCoO3 perovskites: a small hole doping result in a large positive Seebeck coefficient, while electron doping give a negative Seebeck coefficient at room temperature. At high temperature, theSeebeck coefficients of LaCoO3 and related compounds decrease to small values close to 20 ? V/K at 800 K due to the spin state transition. On the other hand, in the case of metallic-like samples as electron-doped manganites, the properties can be described up to high T in terms of a band metal. Due to the linear variation of S as a function of T and the almost constant value of r?, the ratio S2/r? which is crucial for high temperature applications, increases

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2007

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Progress in Solid State Chemistry

ISSN

0079-6786

e-ISSN

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Volume of the periodical

35

Issue of the periodical within the volume

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Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

457-467

UT code for WoS article

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EID of the result in the Scopus database

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