Improvement of dissipative property in HTS coil impregnated with solid nitrogen

T. Nakamura, K. Higashikawa, I. Muta, A. Fujio, K. Okude, T. Hoshino

Research output: Contribution to journalConference articlepeer-review

20 Citations (Scopus)


Dissipative property of high-Tc superconducting (HTS) coil impregnated with solid nitrogen was investigated. Small HTS solenoid coil was fabricated with the use of Bi-2223/Ag multifilamentary tape. Nitrogen was solidified by conduction cooling with Gifford-Macmafon cryocooler at cooling rate of 1 mKs-1. Voltage as well as temperature of the coil was measured by applying the thermal disturbance and bias current. It was shown that the dissipation was reduced drastically by impregnating with solid nitrogen. Furthermore, the properties were also improved by pressurization in the sample chamber. This pressure effect may be due to the suppression of sublimation at the interface between the solid nitrogen and the coil.

Original languageEnglish
Pages (from-to)415-418
Number of pages4
JournalPhysica C: Superconductivity and its applications
Publication statusPublished - Apr 15 2003
Externally publishedYes
EventICMC 2002 - Xi an, China
Duration: Jun 16 2002Jun 20 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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