Field dependence of the critical current density of MgB2 conductors between 4.2 K and 30 K up to 20 T

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Atıf İçin Kopyala

Arda L., Ozdemir M., Akin Y., Aktas S., Tomsic M., Hascicek Y.

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, cilt.15, sa.2, ss.3281-3283, 2005 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 15 Sayı: 2
• Basım Tarihi: 2005
• Doi Numarası: 10.1109/tasc.2005.848852
• Dergi Adı: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Sayfa Sayıları: ss.3281-3283
• Marmara Üniversitesi Adresli: Hayır

Özet

The critical current density (J(c)) of the monofilament Monel/Fe/MgB2 wire was measured between 4.2 K and 30 K with a Variable Temperature Insert (VTI) in a 20 T superconducting magnet using the analog DC pulse four-wire method with 1 mu v/cm criterion. The critical current density, J(c) was measured to be 0.16 x 10(5) A/cm(2) at 4 T at 21 K for a MgB2 sample which was annealed at 700 degrees C for 5 min and at 900 degrees C for 5 min under Ar gas flow. Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD) analysis were used to characterize the microstructure of the samples.