Measurement of complex electrical conductivity of metallic powders in a sealed tube

Atsutaka Maeda, Ryoji Matsuo, Ryotaro Inoue, Haruhisa Kitano, Taishi Takenobu, Yoshihiro Iwasa, Tadaoki Mitani

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


We studied the method of complex-electrical-conductivity measurement for powders placed in a sealed tube at microwave and millimeter-wave frequencies, using a cavity perturbation technique. We applied this technique to a molecular superconductor K3C60, whose electrical conduction is well known in single crystals, and reproduced the metallic conductivity with the magnitude of 0.5-1.2 mΩcm at 20 K which is in good agreement with the data for single crystals. From this result, it was found that the cavity perturbation technique works well for the conductivity measurement of anaerobic powders, with respect to metallic materials.

Original languageEnglish
Pages (from-to)6459-6464
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number11
Publication statusPublished - 2000 Nov
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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