Measuring AC losses and critical current of high pressure synthesized MgB2 bulk rings by the transformer method

Victor Meerovich, Vladimir Sokolovsky, Tatiana Prikhna, Wolfgang Gawalek

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The results of experimental study of the critical current and AC losses in high pressuresynthesized MgB2 bulk superconductors are presented. The method is based on the use of the transformer configuration and suitable for samples in the form of hollow superconducting cylinders and rings. It was shown that the critical current measured by the transformer method is an order of magnitude lower than the value given by the magnetization technique. The obtained dependencies of the losses on current and frequency reveal the deviations from the critical state model behavior and reflect structural peculiarities of the investigated MgB2 samples.

Original languageEnglish
Title of host publicationApplied Electromagnetic Engineering for Magnetic, Superconducting and Nano Materials
PublisherTrans Tech Publications Ltd
Pages27-32
Number of pages6
ISBN (Print)9783037854204
DOIs
StatePublished - 1 Jan 2012
Event7th Japanese-Mediterranean and Central European Workshop on Applied Electromagnetic Engineering for Magnetic, Superconducting and Nano Materials, JAPMED'7 - Budapest, Hungary
Duration: 6 Jul 20119 Jul 2011

Publication series

NameMaterials Science Forum
Volume721
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference7th Japanese-Mediterranean and Central European Workshop on Applied Electromagnetic Engineering for Magnetic, Superconducting and Nano Materials, JAPMED'7
Country/TerritoryHungary
CityBudapest
Period6/07/119/07/11

Keywords

  • AC losses
  • Critical current

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