Observation of Superconductivity in Nb_2O_5 Doped YBa_2Cu_3O_<7-δ> Compound by Rapid Quenching

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概要

• 論文の詳細を見る

• Superconductivity in YBCO compound depends on its oxygen stoichiometry and to keep the oxygen stoichiometry at the desired level, slow cooling of samples in oxygen atmosphere was reported to be essential. In our present work it is found that the widely accepted procedure of slow cooling at a rate of 1℃/min or annealing at 600℃ for several hours after high temperature sintering is not essential to obtain high temperature superconductivity if the YBCO samples are doped with small amount of Nb_2O_5. Superconductivity could still be obtained by directly quenching the doped specimen in oxygen from sintering temperature. Tetragonal to orthorhombic transformation takes place in seconds in doped samples indicates that the rate of absorption of oxygen has tremendously increased by the Nb_2O_5 addition.

• 社団法人応用物理学会の論文
• 1991-03-15

著者

• Koshy J

  Regional Res. Lab.(csir) Trivandrum Ind

• Damodaran A

  Csir Trivandrum Ind

• Damodaran A.d.

  Regional Research Laboratory (csir)

• PAULOSE K.V.

  Regional Research Laboratory (CSIR)

• KOSHY J.

  Regional Research Laboratory (CSIR)

• Damodaran A

  Regional Research Laboratory Council Of Scientific & Industrial Research

関連論文

• Superconductivity and Electrical Transport in YBa_2Cu_3O_-PrBa_2SnO_ Percolation System
• Rare-Earth Barium Niobates: A New Class of Potential Substrates for YBa_2Cu_3O_ Superconductor
• Variation of Transport Properties with Density of YBa_2Cu_M_xO_ (M=Ti^, V^, Cr^ or Mn^ and x=0.0-0.1 g atom)
• YBa_2SnO_: A New Phase in YBa_2Cu_3O_7-SnO_2 System
• Observation of Superconductivity in Nb_2O_5 Doped YBa_2Cu_3O_ Compound by Rapid Quenching
• 押し出し成形されたBPSCCO超伝導体-PMMA複合体の焼結及び組織成長のためのプロセッシング

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