Estimation method of the distance between the sensor and the sample in local current distribution measurement in superconducting tape based on scanning hall-probe microscopy

Kei Shiohara, Keitaro Okumura, Kohei Higashikawa, Takanobu Kiss

Research output: Contribution to journalArticle

Abstract

Scanning Hall-probe microscopy is a very powerful technique for the characterization of local properties in superconducting tape. On the other hand, the quantitative results can only be obtained with a known distance between the Hall-sensor and the sample. In this study we have proposed an estimation method of such a distance without any gap sensor. Considering the boundary condition that current should be zero outside of the sample, we have succeeded in estimating such a distance only from a measured distribution of magnetic field. This method will be a key technology for the characterization of long superconducting tapes by reel-to-reel magnetic microscopy where there would be some possibility of fluctuation of the distance due to vibration at a high-speed measurement.

Original languageEnglish
Pages (from-to)19-24
Number of pages6
JournalResearch Reports on Information Science and Electrical Engineering of Kyushu University
Volume18
Issue number1
Publication statusPublished - Jan 1 2013

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All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Electrical and Electronic Engineering

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