http://www.cnr.it/ontology/cnr/individuo/prodotto/ID176063
MgB2 tapes with non-magnetic sheath: effect of the sintering temperature on the superconducting properties (Articolo in rivista)
- Type
- Label
- MgB2 tapes with non-magnetic sheath: effect of the sintering temperature on the superconducting properties (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1109/TASC.2005.848796 (literal)
- Alternative label
V. Braccini; D. Nardelli; A. Malagoli; A. Tumino; C. Fanciulli; C. Bernini; A.S. Siri; G. Grasso (2005)
MgB2 tapes with non-magnetic sheath: effect of the sintering temperature on the superconducting properties
in IEEE transactions on applied superconductivity (Print); IEEE-Institute Of Electrical And Electronics Engineers Inc., Piscataway (Stati Uniti d'America)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- V. Braccini; D. Nardelli; A. Malagoli; A. Tumino; C. Fanciulli; C. Bernini; A.S. Siri; G. Grasso (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- I.N.F.M. Corso Perrone 24 16146 Genova
SPIN Istituto superconduttori, materiali innovativi e dispositivi
Columbus Superconductors SpA, I-16152 Genova, Italy (literal)
- Titolo
- MgB2 tapes with non-magnetic sheath: effect of the sintering temperature on the superconducting properties (literal)
- Abstract
- A nonmagnetic sheath, namely a Ni/Cr alloy (Ni80/Cr20), was used to fabricate MgB2 tapes through the powder-in-tube (PIT) ex-situ technique. A series of samples sintered at different temperatures between 200 degrees C and 950 degrees C were prepared in order to correlate all the superconducting properties between them and with the sintering temperature. The possibility of using a nonmagnetic but at the same time hard sheath chemically compatible with the MgB2 phase made possible a simpler interpretation of transport and magnetic measurements in magnetic field. With the chosen cold working parameters, we found that the amount of MgB2 lattice strain was not sufficient to produce any enhancement of the upper critical field. The effect of the heat treatment temperature was on one hand to increase the grain connectivity but also to reduce the pinning properties of the superconductor. (literal)
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