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Title of Journal: J Supercond Nov Magn

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Abbravation: Journal of Superconductivity and Novel Magnetism

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Springer US

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DOI

10.1007/s11138-015-0327-7

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ISSN

1557-1947

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Relationship Between Annealing Time and Magnetic P

Authors: B Özçelik B Özkurt M E Yakıncı A Sotelo M A Madre
Publish Date: 2012/12/20
Volume: 26, Issue: 4, Pages: 873-878
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Abstract

In this study we report the physical and magnetic properties of Bi2Sr2CaCu2O x textured materials prepared by a LFZ melting technique and annealed for different times 60 72 96 and 120 h SEM images of the annealed samples for 96 and 120 hours indicate very good alignment with the longitudinal rod axis In all cases Xray diffraction patterns show that the Bi2212 phase is the major one The magnetization measurements have been carried out as a function of the magnetic field up to 9 kOe J c values of the samples were calculated by using the Bean model The results indicate that the different annealing time has no significant effects on the T c values but significant change on the critical current values of samples J c has been obtained for sample annealed at 96 hours We also found that the maximum critical density of J c is 55×105 A/cm2 at 10 K for the 96 hours annealed sampleThis work is supported by Research Fund of Çukurova University Adana Turkey under grant contracts no FEF2011BAP15 B Özçelik and B Özkurt acknowledge financial support from the Council of Higher Education YÖK in Turkey for international mobility MA Madre and A Sotelo acknowledge the MICINNFEDER Project MAT200800429 the Universidad de Zaragoza Project UZ2011TEC03 and the Gobierno de Aragon Consolidated research group T12 for financial support

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