2004
DOI: 10.1088/0953-2048/17/5/035
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Critical currents in magnetically pressed MgB2rods

Abstract: Using a magnetic compression method a 2.3 mm diameter superconducting MgB 2 rod was synthesized in a stainless steel tube. After the compression the MgB 2 density inside the tube reached d = 2.45 g cm −3 , i.e. very near to the theoretical value 2.62 g cm −3 . At T = 4.2 K and B = 0.5 T the quench current reached 870 A. The critical current density versus temperature was determined from electric and magnetic measurements.

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Cited by 9 publications
(9 citation statements)
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“…Initial tablets ( 0.28 extruded in Fig. 2) have a small susceptibilities which goes to zero at a temperature equal to the critical temperature T co 38K corresponding to a bulk sample [5,6,7]. The weak diamagnetism in extruded sample is explained by the fact that MgB 2 particles in a magnesium matrix have no superconducting interface.…”
Section: Resultsmentioning
confidence: 95%
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“…Initial tablets ( 0.28 extruded in Fig. 2) have a small susceptibilities which goes to zero at a temperature equal to the critical temperature T co 38K corresponding to a bulk sample [5,6,7]. The weak diamagnetism in extruded sample is explained by the fact that MgB 2 particles in a magnesium matrix have no superconducting interface.…”
Section: Resultsmentioning
confidence: 95%
“…As seen in Fig.2 the dense samples (with > 0.7) exhibit a single superconducting transition. The susceptibility of the dense sample with = 0.94 [7] is labeled by asterisks. With increasing porosity (decreasing ), two superconducting transitions are observed.…”
Section: Resultsmentioning
confidence: 99%
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“…Even though the critical temperature of MgB 2 is three times lower than the mercury based high T C superconductors (HTSC) cuprates (134 K [24,112,[126][127][128], hot pressing [129], magnetic compression [25], shock wave consolidation [26]. The mechanical properties of MgB 2 bulks prepared by all the above techniques are detailed in Table 2.1.…”
Section: Magensium Boride (Mgb 2 )mentioning
confidence: 99%