TY - JOUR
T1 - Switching characteristics of MgB2 wires subjected to transient application of magnetic field
AU - Higashikawa, K.
AU - Nakamura, T.
AU - Osamura, K.
AU - Takahashi, M.
AU - Okada, M.
N1 - Funding Information:
This work has been supported by The Iwatani Naoji Foundation’s Research Grant in Japan. This work has also been carried out as a project of 21st Century COE Program (No. 14213201) from the Ministry of Education, Culture, Sports, Science and Technology in Japan. The authors are grateful to Mr. Fujiwara at Kyoto University in Japan for the support of the experiments.
PY - 2005
Y1 - 2005
N2 - We investigated current transport properties in MgB2 wires subjected to transient application of magnetic field, and then discussed their applicability to magnetically controlled switching elements. These wires were fabricated by powder-in-tube (PIT) technique, and Cu-Ni as well as stainless was utilized for their sheath material. A short sample of the wire was installed in a Gifford-McMahon (GM) cryocooler, and was impregnated with solid nitrogen for the sake of thermal stabilization. After stabilizing the temperature of the sample at a certain bias current, the voltage and the temperature in between potential taps were monitored with a transient application of magnetic field. Such measurements were repeated systematically as functions of bias current, operating temperature and magnetic field intensity. It was shown that the sample quickly generated resistance without temperature increment by applying the transient and weak magnetic field. This indicates the applicability of MgB 2 wires to persistent current switches (PCS) with quick response.
AB - We investigated current transport properties in MgB2 wires subjected to transient application of magnetic field, and then discussed their applicability to magnetically controlled switching elements. These wires were fabricated by powder-in-tube (PIT) technique, and Cu-Ni as well as stainless was utilized for their sheath material. A short sample of the wire was installed in a Gifford-McMahon (GM) cryocooler, and was impregnated with solid nitrogen for the sake of thermal stabilization. After stabilizing the temperature of the sample at a certain bias current, the voltage and the temperature in between potential taps were monitored with a transient application of magnetic field. Such measurements were repeated systematically as functions of bias current, operating temperature and magnetic field intensity. It was shown that the sample quickly generated resistance without temperature increment by applying the transient and weak magnetic field. This indicates the applicability of MgB 2 wires to persistent current switches (PCS) with quick response.
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U2 - 10.1016/j.physc.2005.01.067
DO - 10.1016/j.physc.2005.01.067
M3 - Conference article
AN - SCOPUS:25644431991
SN - 0921-4534
VL - 426-431
SP - 1261
EP - 1266
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - II
T2 - Proceedings of the 17th Internatioanl Symposium on Superconductivity (ISS 2004) Advances in Superconductivity
Y2 - 23 November 2004 through 25 November 2004
ER -