An automated system for current-voltage characterization of ceramic superconductors

F. A. List, P. M. Martin, D. M. Kroeger

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

An automated system for determinations of transport current-voltage (I-V) characteristics as a function of temperature (25-125 K), magnetic field (0-1.6 T), and magnetic field orientation (-125 to +145°) is described. Currents of up to 100 A are applied either as a continuous ramp or as pulses of 2-100 ms duration. A closed-cycle helium refrigerator provides a rapid (∼45 min), convenient, cost effective, cooldown from 300 to 25 K. Control of current, temperature, magnetic field, and field orientation is fully automated and requires no user interaction. The characterization of performance of a ceramic superconductor typically involves several temperatures, fields, and orientations and requires 8-30 h to complete.

Original languageEnglish
Pages (from-to)3187-3192
Number of pages6
JournalReview of Scientific Instruments
Volume67
Issue number9
DOIs
StatePublished - Sep 1996

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