2003
DOI: 10.2221/jcsj.38.615
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Self-field Loss in AC Transport Current Loss of MgB2 Superconducting Composites

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Cited by 4 publications
(7 citation statements)
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“…J c decreased as temperature raised, 136 A/mm 2 at 20 K and 110 A/mm 2 at 25 K and 75.9 A/mm 2 at 30 K for no-added wire. J c of the wire with SiC addition was 110 A/mm 2 at 20 K and 89.7 A/mm 2 at 25 K and 58.6 A/mm 2 at 30 K. These values are one order of magnitude higher than those of the previous wires with CuNi sheath and Ni sheath [1,2].…”
Section: Critical Temperature (T C ) and Critical Current Density (J C )mentioning
confidence: 63%
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“…J c decreased as temperature raised, 136 A/mm 2 at 20 K and 110 A/mm 2 at 25 K and 75.9 A/mm 2 at 30 K for no-added wire. J c of the wire with SiC addition was 110 A/mm 2 at 20 K and 89.7 A/mm 2 at 25 K and 58.6 A/mm 2 at 30 K. These values are one order of magnitude higher than those of the previous wires with CuNi sheath and Ni sheath [1,2].…”
Section: Critical Temperature (T C ) and Critical Current Density (J C )mentioning
confidence: 63%
“…A conventional four-terminal method is used for adjusting the phase in AC loss measurement [1,2]. In this method, inductive voltages and electromagnetic noises superposed on the terminal voltage of the superconductor were eliminated by using a cancel coil and a lock-in amplifier, and then very small resistive voltage can be precisely measured.…”
Section: Methodsmentioning
confidence: 99%
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“…Since both the MgB 2 superconducting windings for rotor and stator in the motor are located inside iron cores, the windings are scarcely exposed to the external magnetic field, and therefore the self-fields due to currents flowing in the windings themselves become dominant. The threephase alternating currents are supplied to the stator winding in the proposed motor to generate a rotating magnetic field inside, so that a detailed understanding of AC loss properties in the MgB 2 windings is one of the key factors to realize the cryogenic superconducting pump although the AC loss measurements of various kinds of MgB 2 wires have been carried out so far [13]- [15].…”
Section: Introductionmentioning
confidence: 99%