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26 April 2024 |
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Fast formation and superconductivity of MgB2 thick films grown on stainless steel substrate | | A.H. Li
; X.L. Wang
; M. Ionescu
; S. Soltonian
; J. Horvat
; T. Silver
; H.K. Liu
; S.X. Dou
; | | Date: |
26 Apr 2001 | | Subject: | Superconductivity; Materials Science | cond-mat.supr-con cond-mat.mtrl-sci | | Abstract: | The fabrication, characterisation, and superconductivity of MgB2 thick films grown on stainless steel substrate were studied. XRD, SEM, and magnetic measurements were carried out. It was found that the MgB2 thick films can be fast formed by heating samples to 660 oC then immediately cooling down to room temperature. XRD shows above 90% MgB2 phase and less than 10 % MgO. However, the samples sintered at 800 oC for 4 h contain both MgB4 and MgO impurities in addition to MgB2. The fast formed MgB2 films appear to have a good grain connectivity that gives a Jc of 8 x 10 4 A/cm2at 5 K and 1 T and maintained this value at 20 K in zero field. | | Source: | arXiv, cond-mat/0104501 | | Services: | Forum | Review | PDF | Favorites | |
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