Magnetic properties of KClO3-doped Y(1-0.2x)Ba(2-0.2x)KxCu3Oy, (x = 0-0.40) HTSC

A. Koblischka-Veneva, M. R. Koblischka, K. Ogasawara, M. Murakami

研究成果: Conference article査読

2 被引用数 (Scopus)


The influence of KClO3 addition on the magnetic properties and microstructural parameters (grain size, grain boundaries) of high-temperature superconductors (HTSC) with nominal composition Y(1-0.2x)Ba(2-0.2x)KxCu3Oy (x = 0-0.40) were investigated. The ac complex susceptibility χac = χ′ - iχ″ was recorded as a function of temperature and concentration of KClO3 at various ac magnetic fields up to 2 mT. The data were analysed using the relation h = a(1 - Tm/Tc)n, where Tm represents the intergranular peak temperature of the imaginary component χ″. The value of a is found to increase for doped samples, which suggests enhanced flux pinning due to the KClO3 addition. The dc susceptibility as a function of temperature was measured by means of a SQUID magnetometer in field-cooled cooling (FCC) and field-cooled warming (FCW) modes in magnetic fields in the range 10 mT ≤ μ0Ha ≤ 7 T on KClO3-doped and pure YBCO samples. The Meissner curves reveal that the samples are single phase in all applied fields, but the low-temperature behaviour of the samples with KClO3 additions is different from that of pure YBCO.

ジャーナルSuperconductor Science and Technology
出版ステータスPublished - 2000 6月 1
イベントThe 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials - Morioka, Jpn
継続期間: 1999 10月 191999 10月 22

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 凝縮系物理学
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学


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