Effects of oxygen content on the superconducting properties of melt-textured LRE123 superconductors

doi:10.1016/S0921-4534(97)00115-9

Physica C: Superconductivity

Volume 278, Issues 3–4, 1 May 1997, Pages 187-191

https://doi.org/10.1016/S0921-4534(97)00115-9 Get rights and content

Abstract

The effects of oxygen content on the superconducting transition temperatures, T_c, and magnetic properties of melt-textured LRE123 (LRE  Nd, Sm) superconductors were studied. The oxygen content could be varied by changing the annealing temperature, T_a, in that the oxygen deficiency, δ, monotonically decreased with decreasing the T_a from 600°C to 300°C. A further decrease of T_a to 275°C showed no appreciable change. In both systems the highest T_c was obtained for the samples annealed at 300°C. Magnetic properties were also strongly dependent on the oxygen content, showing that the control of oxygen content is critical for achieving good pinning properties.

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Citation Excerpt :
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Effects of oxygen content on the superconducting properties of melt-textured LRE123 superconductors

Abstract

Physica C

Physica C

Jpn. J. Appl. Phys.

Jpn. J. Appl. Phys.