Thermodynamic properties of tubular cobaltite Bi3.7Sr11.4Co8O29-delta
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10295900" target="_blank" >RIV/00216208:11320/15:10295900 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.tca.2015.02.012" target="_blank" >http://dx.doi.org/10.1016/j.tca.2015.02.012</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.tca.2015.02.012" target="_blank" >10.1016/j.tca.2015.02.012</a>
Alternative languages
Result language
angličtina
Original language name
Thermodynamic properties of tubular cobaltite Bi3.7Sr11.4Co8O29-delta
Original language description
We synthetized a tubular cobaltite Bi3.7Sr11.4Co8O29-delta ceramics and characterized it using X-ray diffraction (XRD) and scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS). The simultaneous thermal analysis (STA) revealed a veryunusual thermal behavior which was eventually ascribed to metastability of tubular phase at lower temperatures. The heat capacity and enthalpy increments were measured by physical property measurement system (PPMS), differential scanning calorimetry (DSC) and drop calorimetry. The oxygen non-stoichiometry was determined using thermogravimetric measurement (TG) and reduction in hydrogen atmosphere. Above room temperature the temperature dependence of the molar heat capacity was derived by simultaneous least squares method from DSC and enthalpy data. The heat capacity was also analyzed in terms of a combined Debye-Einstein model. The molar entropy s(m)(o) (298.15)= 1349.45J mol(-1) K-1 was evaluated from the low temperature heat capacity
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Thermochimica Acta
ISSN
0040-6031
e-ISSN
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Volume of the periodical
605
Issue of the periodical within the volume
April
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
6
Pages from-to
22-27
UT code for WoS article
000352177400004
EID of the result in the Scopus database
2-s2.0-84923350255