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Tomashpol'skii, Yu. Ya.; Rybakova, L. F.; Lunina, T. V.; Fedoseeva, Olga; Prutchenko, S. G.; Men'shikh, S. A.

doi:10.1023/a:1017537102999

Cited by 8 publications

(1 citation statement)

References 7 publications

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“…The role of the number of CuO 2 planes is typical mainly for Bi 2 Sr 2 Ca n −1 Cu n O 2 n +4 , in which n represents the number of CuO 2 planes, and T c ‐values are around 10, 85, and 110 K for the superconducting phases Bi 2 Sr 2 CuO 6+ x , Bi 2 Sr 2 CaCu 2 O 8+ x , and Bi 2 Sr 2 Ca 2 Cu 3 O 10+ x , respectively 2. On the other hand, a double‐layer structure, YBa 2 Cu 3 O 7 , has a T c of ∼94 K 3. In YBa 2 Cu 3 O 7 , there are Y cations between CuO 2 planes.…”

Section: Introductionmentioning

confidence: 99%

Unexpected transport and magnetic properties in Y–Ba–Cu–O superconductors

Topal

2010

Physica Status Solidi (a)

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Solid-state reactions of Y 2 O 3 , BaCO 3 , and CuO mixtures at stoichiometric ratios of YBa 4 Cu 6 O x reveal superconducting products having quite interesting and unusual properties. For instance, superconducting transition T c at 90 K even without annealing in oxygen flow could be observed. Existence of a ferromagnetic-like behavior was recognized at low temperatures and magnetic fields greater than 1 T. Critical current densities are higher than the one expected from a polycrystalline superconductor. In addition, intergranular J ct -values obtained from the transport measurements show strong magnetic field dependency. Magnetic fields of $6.4 Oe decrease J ct by about 62% in magnitude. These materials seem to be good candidate for a low field sensor in superconducting gaussmeters.

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Section: Introductionmentioning

confidence: 99%