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AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name. |
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STUDIA PHYSICA - Issue no. 2 / 2005 | |||||||
Article: |
EFFECT OF ANNEALING TIME ON THE Bi1.6Pb0.4Sr1.6Ca2.0Cu2.8OX SYSTEM. Authors: S. SIMON, G. BORODI, T. FRENŢIU, S.D. ANGHEL, ALPAR SIMON. |
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Abstract: A superconducting sample with nominal composition Bi1.6Pb0.4Sr1.6Ca2.0Cu2.8Ox was investigated. It was annealed in air, at 845 oC, for 50, 150 and 200 hours. The samples were investigated via AC susceptibility measurements and XRD. The elemental content of the samples (concentrations and stoichiometric coefficients) was studied via plasma source atomic emission spectroscopy. It was established that the Pb content decreases linearly with the annealing time. The results of the investigations indicate that an extensive heat treatment could cause an alteration of the 2223 phase and its transformation in lower TC phases. | |||||||
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