Flux trapping on multi-superconducting phase PAT12-C60-Rb composite: Low-field microwave absorption study

Hisashi Araki, Hirotake Kajii, Kazuya Tada, Anvar A. Zakhidov, Kyuya Yakushi, Tohru Sekino, Koichi Niihara, Katsumi Yoshino

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The in-phase and out-of-phase low field microwave absorption (LFMA) signals in a PAT12(C60)0.05Rbx composite, consisting of superconducting granular Rb3C60 grains embedded in host poly(3-alkyltiophene) (PAT12) matrices, are investigated as functions of temperature and the intensity of trapped field. Temperature dependence of the peak field Hp of the out-of-phase and in-phase LFMA obeys the relation Hp∼{1 - (T/Tc2)}1/4 and Hp∼{1 - (T/Tc1)4}1/2 respectively, where Tc2 ( = 22 K) and Tc1 (=26 K) is the critical temperature of respective phase. Threshold field of the flux trapping in the out-of-phase and in-phase LFMA is nearly zero and 150 G respectively. These results support the previous models proposed for the origins of two phases presented in the K-doped CP-C60 composites.

Original languageEnglish
Pages (from-to)607-614
Number of pages8
JournalSolid State Communications
Volume103
Issue number11
DOIs
Publication statusPublished - 1997 Sep

Keywords

  • A. fullerenes
  • A. polymers
  • A. superconductors

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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