Enhanced microwave absorption near Tc in micron-size powders of cuprate superconductors

M. A. Manheimer, S. Lofland, A. Gould, S. M. Bhagat, B. Halsey, S. M. Green, S. Tyagi

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


We report a systematic study of a large peak in the microwave losses near Tc in micron-size powders of high-Tc superconducting cuprates. It is demonstrated that the effect arises because all the grains do not have a single Tc. The onset of superconductivity in some particles enhances the RF field "seen" by their neighbors leading to a net increase in absorption. The temperature regime of enhanced loss spans the extrema of the transition temperatures.

Original languageEnglish (US)
Pages (from-to)324-332
Number of pages9
JournalPhysica C: Superconductivity and its applications
Issue number4-6
StatePublished - Nov 20 1991
Externally publishedYes

ASJC Scopus subject areas

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


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