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- W1987873816 abstract "We applied hot pressing to in situ powder-in-tube-processed (PIT-processed) MgB2 tapes. We enhanced the superconducting properties by adding nanometer-sized SiC powder and ethyltoluene (C9H12) to the mixed powder. Hot pressing was performed at 100 MPa and 630 °C in an Ar gas atmosphere for 2–10 h. Hot pressing reduced the cross-sectional area of the MgB2 tapes from ∼ 0.55 mm2 for conventionally heat-treated tapes to ∼ 0.44 mm2. This increased the MgB2 core density from 50% to 70%. Undoped MgB2 tapes hot pressed for 5 h exhibited a transport Jc of 90 A mm − 2 at 4.2 K and 10 T, which is about three times greater than that for a tape heat treated without hot pressing. The value of Jc for codoped tape hot pressed for 5 h was 450 A mm − 2 at 10 T, which is larger than that for codoped tape heat treated without hot pressing (280 A mm − 2). These results clearly demonstrate that hot pressing is effective in increasing the MgB2 core density, and hence in enhancing the Jc values of PIT-processed MgB2 tapes." @default.
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- W1987873816 date "2010-03-19" @default.
- W1987873816 modified "2023-10-17" @default.
- W1987873816 title "Improvement of the critical current properties of<i>in situ</i>powder-in-tube-processed MgB<sub>2</sub>tapes by hot pressing" @default.
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- W1987873816 doi "https://doi.org/10.1088/0953-2048/23/4/045030" @default.
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