Effect of oxygen atom disordering on Tc OF YBa2Cu3O7 − x

Bukowski, Z.; Horyń, R.; Rogacki, K.; Filatow, I.; Sulkowski, C.; Wołcyrz, M.; Klamut, J.

doi:10.1016/0022-5088(88)90127-0

Cited by 16 publications

(3 citation statements)

References 20 publications

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“…The oxygen stoichiometry is a determinant factor in the preparation of these superconductors. The dependence of Tc upon oxygen content is supposed to be known; collecting the results of Cava et al [22] and Bukowsld et al [23] the courses are reported in Fig. 3.…”

Section: Experimental and Discussionmentioning

confidence: 94%

Topics on the preparation of HTSC via solid state reaction and melting process

Carnasciali

Costa

Ferretti

et al. 1991

Journal of Thermal Analysis

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Section: Experimental and Discussionmentioning

confidence: 94%

Topics on the preparation of HTSC via solid state reaction and melting process

Carnasciali

Costa

Ferretti

et al. 1991

Journal of Thermal Analysis

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“…Silver paste electrodes were deposited on the surfaces of the samples designed for electrical measurements. The next step was the main stage of the preparation: a slow cooling from about 900 • C to room temperature in air under ambient pressure for 10 h. During that stage, oxygen atoms are incorporated into the material crystalline structure [18]. The most effective absorption of oxygen appears at 600-620 • C [19].…”

Section: Sample Preparationmentioning

confidence: 99%

Acoustic emission from YBa₂Cu₃O_xsuperconductors

Woźny¹,

Kisiel²,

Rutkowski³

2010

Supercond. Sci. Technol.

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Yttrium-based high-temperature ceramic superconductors were prepared by the use of a conventional solid state reaction. The common superconducting properties, critical temperature and critical current at 77 K, were determined by electrical measurements. The acoustic emission from the superconducting samples was measured during the phase transition from the superconducting state to the normal state following a temperature rise from 77 to 100 K. The rate and the sum of the ultrasound pulses are presented. Correlations were noticed between acoustic emission and the superconducting parameters and superconducting state of the samples. No emission was detected during the electrical current rise up to the critical value.

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“…For this estimation the angle, f, of the spot splitting has been used to calculate the b͞a ratio according to b a tan 17). From these b͞a values the oxygen content has been obtained by using the results of Jorgensen et al 18 and Bukowski et al 19 who determined the dependence of the b͞a ratio from the oxygen deficit. The oxygen content of the furnace-decomposed samples was higher because after the decomposition in air they were always reloaded with oxygen which was not possible for samples within the TEM.…”

Section: Microstructure After In Situ Decomposition Within the Temmentioning

confidence: 99%

Transmission Electron Miscroscopy Observation of the Decomposition of YBa₂Cu₄O₈ into YBa₂Cu₃O_7-δ and CuO

et al. 1997

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The decomposition of YBa 2 Cu 4 O 8 (Y-124) into YBa 2 Cu 3 O 72d (Y-123) and CuO at high temperatures has been expected to create Y-123 with finely dispersed CuO precipitates suitable for flux pinning. In fact, samples of thermally decomposed Y-124 exhibit a critical current density, J c , which is enhanced with respect to the starting material as well as to pure Y-123. Transmission electron microscopy (TEM) studies of furnace annealed Y-124 were not suitable to clarify the reason for this J c enhancement. Nevertheless, the formation and growth of CuO precipitates have been observed by in situ decomposition of the Y-124 starting material due to electron beam heating within the TEM. 906

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Effect of oxygen atom disordering on Tc OF YBa2Cu3O7 − x

Cited by 16 publications

References 20 publications

Topics on the preparation of HTSC via solid state reaction and melting process

Topics on the preparation of HTSC via solid state reaction and melting process

Acoustic emission from YBa₂Cu₃O_xsuperconductors

Transmission Electron Miscroscopy Observation of the Decomposition of YBa₂Cu₄O₈ into YBa₂Cu₃O_7-δ and CuO

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Effect of oxygen atom disordering on Tc OF YBa2Cu3O7 − x

Cited by 16 publications

References 20 publications

Topics on the preparation of HTSC via solid state reaction and melting process

Topics on the preparation of HTSC via solid state reaction and melting process

Acoustic emission from YBa2Cu3Oxsuperconductors

Transmission Electron Miscroscopy Observation of the Decomposition of YBa2Cu4O8 into YBa2Cu3O7-δ and CuO

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Acoustic emission from YBa₂Cu₃O_xsuperconductors

Transmission Electron Miscroscopy Observation of the Decomposition of YBa₂Cu₄O₈ into YBa₂Cu₃O_7-δ and CuO