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Particle size effect on the superconducting properties of YBa2Cu3O7-x particles

Abstract

YBCO samples with different microstructure were prepared after thermal treatment of a precursor previously obtained by auto-combustion. A drastic influence of the particle size in the magnetic behavior of the samples was observed. Thus, particles smaller than 110 nm do not illustrate superconducting properties and for those ranging around 200 nm the diamagnetic signal characteristic of the superconductivity at low temperature, disappears for large applied magnetic field. Particles larger than 300 nm, do not exhibit particle size effect. Accompanying such phenomenology, an increment of the superconducting critical temperature is observed with the increase of the particle size, with 18 K being the lowest value, which corresponds to 110 nm particles.

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Publication details

The article was received on 31 May 2017, accepted on 05 Aug 2017 and first published on 07 Aug 2017


Article type: Paper
DOI: 10.1039/C7DT01974B
Citation: Dalton Trans., 2017, Accepted Manuscript
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    Particle size effect on the superconducting properties of YBa2Cu3O7-x particles

    V. BLANCO GUTIERREZ, M. J. Torralvo Fernández and M. A. Alario-Franco, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT01974B

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