Calculation of thermodynamic properties of the phases in the Y-Ba-Cu-O system

Moiseev, G. K.; Vatolin, N. A.; Zaizeva, S.I.; Ilyinych, N.I.; Tsagareishvili, D. Sh.; Gvelesiani, G.G.; Baratashvili, I. B.; Šesták, Jaroslav

doi:10.1016/0040-6031(92)85083-8

Cited by 25 publications

(6 citation statements)

References 10 publications

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“…Estimation methods show their importance for computing thermodynamical and thermochemical properties of many inorganic compounds [46] as documanted on the well screened Y-Ba--Cu--O system [20][21][22][23][24][25][26][27][28][29][30][31][32][33]. It certainly would be a useful complementary source of data for existing databases [31,35,38,47].…”

Section: Discussionmentioning

confidence: 99%

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Some thermodynamic aspects of highT c superconductors

Šesták

Sedmidubský

Moiseev

1997

Journal of Thermal Analysis

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Thermochemical and thermodynamical properties of HTSC phases are reviewed for the Y-Ba-Cu--O system and also presented for the newly calculated Bi--Sr-Cu--O system stressing out stoichiometric and phenomenological viewpoints. Simulated data are listed for (/-/~298--/~o), phase transformation temperatures, standard entropies, standard enthalpies of formation, heat capacities in crystalline phase, etc. Pseudobinary phase diagrams are treated showing the effect of oxygen partial pressure particularly illustrated on the (Sr, Bi, Ba)--Cu--O system.

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Section: Discussionmentioning

confidence: 99%

“…It was shown, for example, that thermodynamic simulation of the YBa2Cu30~ (123~, 5 >__ 8 < 7) formation [21] can be realised on basis of a formal mixing of the end members, i.e. both 123 phases having the oxygen content 6 and 7.…”

Section: Our Previous Studies On the Yba2cu30 ~ Related Phasesmentioning

confidence: 99%

Some thermodynamic aspects of highT c superconductors

Šesták

Sedmidubský

Moiseev

1997

Journal of Thermal Analysis

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“…Alumina will tend to form more readily than Cu 2 O because of its thermodynamic propensity for oxide formation over that of copper oxides. [49][50][51] Thus, the passive oxide films for both N-AlCu and UV-AlCu are primarily alumina-based. A BE shift of P 1…”

Section: Almentioning

confidence: 99%

Mechanistic Studies on Room Temperature Photoexcitation Effects on Passivity Breakdown of Ultrathin Surface Oxide Films Formed on Ternary Al−5%Cu−5%Ni Alloys

2010

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How the composition of nanoscale surface oxides formed on complex metal alloys affects their passive state is a problem of great interest in physical chemistry as well as in technological applications. In this work, we report on experimental studies regarding the problem concerning the role of room-temperature photoexcitation on altering composition of ultrathin oxides formed on ternary Al−Cu−Ni thin film alloy surface and its influence in passivity breakdown in aqueous media. Extensive studies have been carried out on pure copper, Al−5%Cu, and Al−5%Cu−5%Ni alloy thin films to investigate the mechanistic role of alloying elements as well as their oxide formation characteristics on the passive state. The differences in nanoscale oxide composition formed have a remarkable influence on the passivity breakdown of the oxide films as verified from electrochemical measurements, and possible mechanisms leading to the observations are discussed in detail.

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“…High-accuracy, high-temperature solution calorimetry [154,390,391] is commonly used. Such data are also simulated for existing or even hypothetical compositions [392][393][394][395][396]. Unfortunately, unavailable structural and compositional definitions for some of the variable-valence phases, rather than the error margins, seem to be at the mot of the problem.…”

Section: Small Resmentioning

confidence: 99%

Phase diagrams for the YBa2Cu3O7 family — ANNO 1996

Karen

Kjekshus

1997

Journal of Thermal Analysis

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Phase diagrams for cupratcs of alkaline earth and rare earth elements are presented, covering binary to quintenary oxides and including selected solid solution series with other elements. Elementary crystal chemical data are included for identification of the occurring phases. Chemical stability is discussed with respect to the high-temperature reactions with Lewis acids like CO2, protons, etc. Particularly the occurrence of oxide carbonates is consistently pointed out as one of the possible reasons for contradictory results in phase diagrams which comprise oxides with high basicity.

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Calculation of thermodynamic properties of the phases in the Y-Ba-Cu-O system

Cited by 25 publications

References 10 publications

Some thermodynamic aspects of highT c superconductors

Some thermodynamic aspects of highT c superconductors

Mechanistic Studies on Room Temperature Photoexcitation Effects on Passivity Breakdown of Ultrathin Surface Oxide Films Formed on Ternary Al−5%Cu−5%Ni Alloys

Phase diagrams for the YBa2Cu3O7 family — ANNO 1996

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