Electromagnetic and calorimetric measurements for AC losses of a YBa 2Cu3O7-δ coated conductor with Ni-alloy substrate

D. N. Nguyen, P. V.P.S.S. Sastry, D. C. Knoll, J. Schwartz

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19 Scopus citations

Abstract

The AC losses of a rolling-assisted-biaxially-textured-substrate (RABiTS™) processed YBa2Cu3O7-δ (YBCO) coated conductor(Goyal et al 1996 Appl. Supercond.4 403-27) with Ni-alloy substrate and Cu stabilizer were measured at 77K by both calorimetric (CM) and electromagnetic (EM) methods. In the CM method, improvements in the measurement were observed when a Cernox temperature sensor was used to measure the temperature rise on the sample instead of a differential thermocouple. The effect of heat transferred from current leads was taken into account to improve the accuracy of the CM results. In the EM method, the magnetization losses of the sample in a perpendicular applied field were measured by an in-plane pick-up coil. The calculation of the calibration factor C of the pick-up coil is discussed. Good agreement between AC loss results obtained from the CM and EM methods confirmed the validity of our measurements and calculations.

Original languageEnglish (US)
Article number004
Pages (from-to)1010-1017
Number of pages8
JournalSuperconductor Science and Technology
Volume19
Issue number10
DOIs
StatePublished - Oct 1 2006

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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