✦ LIBER ✦

Synthesis and superconducting properties of Pr doped Y2Ba4Cu7Oz

✍ Scribed by N. Seiji; S. Adachi; H. Yamauchi

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 146 KB
Volume: 235-240
Category: Article
ISSN: 0921-4534
DOI: 10.1016/0921-4534(94)91406-0

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✦ Synopsis

We have synthesized (Y~. Pr )2Ba4CuTO z compounds and investigated their superconducting properties. The samples are prepared by means of an O2-HIP technique. Nearly single phase samples of the Y2Ba4Cu70~ structure are obtained for x=0"--0.8. All the lattice parameters, a, b, and c, increase with increasing Pr content. The superconducting transition temperature T decreases monotonically from 93K at x--0 to 38K at x=0.6. The sample with x=0.8 does not show superconductivity above 4.2K. Compared with T's which were previously reported for (Yz. Pr )Ba2Cu30 and (Y~.xPr)Ba2Cu4Os, the T values for (Y~.~Pr~)zBa4Cu~O ~ samples are found to be closer to those for (Yv Pr )Ba2Cu30 for x<:0.2 but to those for (Yv Pr)Ba2Cu4Os for x>0.2.

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