Oxygen non-stoichiometry and thermodynamic properties of Bi2Sr2CoO6+delta ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10210332" target="_blank" >RIV/00216208:11320/14:10210332 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/14:43897405 RIV/60461373:22340/14:43897405

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2013.11.008" target="_blank" >http://dx.doi.org/10.1016/j.jeurceramsoc.2013.11.008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2013.11.008" target="_blank" >10.1016/j.jeurceramsoc.2013.11.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Oxygen non-stoichiometry and thermodynamic properties of Bi2Sr2CoO6+delta ceramics

Popis výsledku v původním jazyce

In the literature the structure Bi2Sr2CoO6+delta has been described with a variable oxygen nonstoichiometry delta. We identified delta parameter by thermogravimetric measurements and determined thermodynamic properties of Bi2Sr2CoO6+delta. The heat capacity and enthalpy increments of Bi2Sr2CoO6+delta were measured by the relaxation time method (PPMS) from 2 to 256 K, by differential scanning calorimetry (DSC) from 258 to 355 K and by drop calorimetry from 573 to 1123K. Above-room temperature, the dependence of molar heat capacity under isodynamical (constant po(2)) and conventional isoplethal conditions (constant composition) was derived from the experimental data by the least-squares method. The low temperature heat capacity was analyzed in terms of acombined Debye-Einstein model. The molar entropy S-m(o)(298.15) = 318.9 J K-1 mol(-1) was evaluated from the low-temperature heat-capacity measurements. (C) 2013 Elsevier Ltd. All rights reserved.

Název v anglickém jazyce

Oxygen non-stoichiometry and thermodynamic properties of Bi2Sr2CoO6+delta ceramics

Popis výsledku anglicky

In the literature the structure Bi2Sr2CoO6+delta has been described with a variable oxygen nonstoichiometry delta. We identified delta parameter by thermogravimetric measurements and determined thermodynamic properties of Bi2Sr2CoO6+delta. The heat capacity and enthalpy increments of Bi2Sr2CoO6+delta were measured by the relaxation time method (PPMS) from 2 to 256 K, by differential scanning calorimetry (DSC) from 258 to 355 K and by drop calorimetry from 573 to 1123K. Above-room temperature, the dependence of molar heat capacity under isodynamical (constant po(2)) and conventional isoplethal conditions (constant composition) was derived from the experimental data by the least-squares method. The low temperature heat capacity was analyzed in terms of acombined Debye-Einstein model. The molar entropy S-m(o)(298.15) = 318.9 J K-1 mol(-1) was evaluated from the low-temperature heat-capacity measurements. (C) 2013 Elsevier Ltd. All rights reserved.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of the European Ceramic Society

ISSN

0955-2219

e-ISSN

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Svazek periodika

34

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

1219-1225

Kód UT WoS článku

000331340900021

EID výsledku v databázi Scopus

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