Granularity and intragrain penetration depth in RuSr2GdCu2O8

Y. Y. Xue, B. Lorenz, R. L. Meng, A. Baikalove, C. W. Chu

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31 引文 斯高帕斯(Scopus)

摘要

The multi-stage transition of RuSr2GdCu2O8 (Ru1212) ceramic samples was investigated. An intergrain phase-lock temperature of T2 is identified around 10-30 K. Slightly above T2, however, an isolated Ru1212 grain still behaves as a Josephson-junction array of superconductive nano-domains, which are phase-locked below an interdomain phase-lock temperature (intragrain transition-temperature) of T1 ≈ 33-40 K. The intragrain penetration depth λ1 was subsequently deduced from the ac susceptibility χ′ of powders with different particle-size d (0.3≤d≤10 μm in this work) between T1 and T2. The sample-dependent λ1 ≈ 2.5-6 μm so obtained is extremely long, and bears a systematic correlation with the T1 observed. A phase-separation model was proposed to interpret the data.

原文English
頁(從 - 到)251-253
頁數3
期刊Physica C: Superconductivity and its applications
364-365
DOIs
出版狀態Published - 2001 11月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 能源工程與電力技術
  • 電氣與電子工程

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