Partial melting of bulk NdBa2Cu3O7−δ

descriptionPublicationkeyboard_double_arrow_right Article 01 Oct 1994 English Publisher:Springer Science and Business Media LLCJournal:Il Nuovo Cimento D, volume 16, pages 1,723-1,728 (issn: 0392-6737, eissn: 1826-9893,

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Authors: M. Marella; M. Tomaselli; L. Meregalli; C. Ferdeghini; A. S. Siri;

doi: 10.1007/bf02462166

Partial melting of bulk NdBa2Cu3O7−δ

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Abstract

Two procedures of partial melting of bulk NdBa2Cu3O7−δ, in air and in reduced oxygen pressure, were developed. When the treatment was carried out in air, poor superconducting properties were observed. On the contrary, when the treatment was carried in PO2=1.3 mbar, good properties were obtained, with Tconset=93 K and 100% shielding at lower temperatures. Near full density (2.5×2.5×28) mm3 Nd1.07Ba1.89Cu3.04O7−δ bars, with domains extending in the mm size range, were obtained.

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