### Abstract

The difference between the onset critical temperatures determined by the measurements of a dc-electrical resistivity (T_{cor}) and of an ac-susceptibility (T_{cox}) was examined. In the early stage of the calcination, the resistivity can be zero even when the fraction of the superconductive volume (V) is about 3-6%, but the difference between T_{cor} and T_{cox} is large. When V is larger than 60%, T_{cor} and T_{cox} coincide well with each other. The V dependence of J_{c} is drastically large around V = 100%, therefore, a very high completeness of the superconductive compound is indespensible to a high J_{c}.

Original language | English |
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Pages (from-to) | 449-452 |

Number of pages | 4 |

Journal | Physica B+C |

Volume | 148 |

Issue number | 1-3 |

DOIs | |

Publication status | Published - 1987 Dec |

### ASJC Scopus subject areas

- Engineering(all)

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## Cite this

*Physica B+C*,

*148*(1-3), 449-452. https://doi.org/10.1016/0378-4363(87)90260-9