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The effect of cooling rates on properties of Bi1.7Pb0.35Sr1.9Ca2.1Cu3Oy superconductors produced by solid-state reaction method

✍ Scribed by O. Ozturk; D. Yegen; M. Yilmazlar; A. Varilci; C. Terzioglu

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
188 KB
Volume
451
Category
Article
ISSN
0921-4534

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✦ Synopsis

We have investigated the effect of the cooling rates in the Bi-2223 superconducting samples prepared by standard solid-state reaction method using electrical resistivity, transport critical current density, and XRD (X-ray diffraction) measurements. We estimated the transition temperature values from the DC resistivity measurements. We observed that transition temperature, T c , and transport critical current density, J trans c , depend on the cooling rates of the samples. They both increase with increasing cooling rates. We estimated the peak temperature, T p , from our previous ac susceptibility measurements. The pinning force density increased with increasing the cooling rate. XRD patterns are used to calculate lattice parameter c and obtain information about Bi-2223 phase ratio.

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