Effects of annealing treatment of superconductivity in powder sintered YBCO

X. D. Tang; J. R. Wang; S. G. Xiong; J. R. Xu; G. R. Guo; L. Zhou

Effects of annealing treatment of superconductivity in powder sintered YBCO

X. D. Tang, J. R. Wang, S. G. Xiong, J. R. Xu, G. R. Guo, L. Zhou

Research

科研成果: 书/报告/会议事项章节 › 章节 › 同行评审

摘要

The effects of annealing treatment on superconducting properties of YBCO bulk samples prepared by powder sintering have been reported and discussed. In the annealing temperature (T_A range from 525 to 750°C, the sample with a single Tc component and the highest Tc°ⁿ and Tc° can be obtained only by annealing at 750°C. When T_A = 750°C the bulk samples consist of two Tc components (higher and lower Tc components). Tc°ⁿ of the higher Tc component and Tc° of the lower Tc component increase with increase of T_A. Jc has a parabolic dependence on T^A and attains a peak when T_A = 700°C. The effect of annealing time (in the range of 4-36 h) on Jc and Tc is not too obvious for a given T_A. A simple explanation for these effects is that the perfection of the one-dimensional (1-D) Cu-O chains and 2-D CuO networks is related to annealing. A good super-conductivity can be attained as long as the sample has the perfect 2-D Cu-O networks under the preconditon that the perfection of 1-D Cu-O chains is above a given level.

源语言	英语
主期刊名	Advances in Cryogenic Engineering
出版商	Publ by Plenum Publ Corp
页	447-452
页数	6
卷	36
版本	pt A
ISBN（印刷版）	0306435985
出版状态	已出版 - 1990
已对外发布	是
活动	Proceedings of the 8th International Cryogenic Materials Conference ICMC - Los Angeles, CA, USA 期限: 24 7月 1989 → 28 7月 1989

会议

会议	Proceedings of the 8th International Cryogenic Materials Conference ICMC
市	Los Angeles, CA, USA
时期	24/07/89 → 28/07/89

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title = "Effects of annealing treatment of superconductivity in powder sintered YBCO",

abstract = "The effects of annealing treatment on superconducting properties of YBCO bulk samples prepared by powder sintering have been reported and discussed. In the annealing temperature (TA range from 525 to 750°C, the sample with a single Tc component and the highest Tc°n and Tc° can be obtained only by annealing at 750°C. When TA = 750°C the bulk samples consist of two Tc components (higher and lower Tc components). Tc°n of the higher Tc component and Tc° of the lower Tc component increase with increase of TA. Jc has a parabolic dependence on TA and attains a peak when TA = 700°C. The effect of annealing time (in the range of 4-36 h) on Jc and Tc is not too obvious for a given TA. A simple explanation for these effects is that the perfection of the one-dimensional (1-D) Cu-O chains and 2-D CuO networks is related to annealing. A good super-conductivity can be attained as long as the sample has the perfect 2-D Cu-O networks under the preconditon that the perfection of 1-D Cu-O chains is above a given level.",

author = "Tang, {X. D.} and Wang, {J. R.} and Xiong, {S. G.} and Xu, {J. R.} and Guo, {G. R.} and L. Zhou",

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T1 - Effects of annealing treatment of superconductivity in powder sintered YBCO

AU - Tang, X. D.

AU - Wang, J. R.

AU - Xiong, S. G.

AU - Xu, J. R.

AU - Guo, G. R.

AU - Zhou, L.

PY - 1990

Y1 - 1990

N2 - The effects of annealing treatment on superconducting properties of YBCO bulk samples prepared by powder sintering have been reported and discussed. In the annealing temperature (TA range from 525 to 750°C, the sample with a single Tc component and the highest Tc°n and Tc° can be obtained only by annealing at 750°C. When TA = 750°C the bulk samples consist of two Tc components (higher and lower Tc components). Tc°n of the higher Tc component and Tc° of the lower Tc component increase with increase of TA. Jc has a parabolic dependence on TA and attains a peak when TA = 700°C. The effect of annealing time (in the range of 4-36 h) on Jc and Tc is not too obvious for a given TA. A simple explanation for these effects is that the perfection of the one-dimensional (1-D) Cu-O chains and 2-D CuO networks is related to annealing. A good super-conductivity can be attained as long as the sample has the perfect 2-D Cu-O networks under the preconditon that the perfection of 1-D Cu-O chains is above a given level.

AB - The effects of annealing treatment on superconducting properties of YBCO bulk samples prepared by powder sintering have been reported and discussed. In the annealing temperature (TA range from 525 to 750°C, the sample with a single Tc component and the highest Tc°n and Tc° can be obtained only by annealing at 750°C. When TA = 750°C the bulk samples consist of two Tc components (higher and lower Tc components). Tc°n of the higher Tc component and Tc° of the lower Tc component increase with increase of TA. Jc has a parabolic dependence on TA and attains a peak when TA = 700°C. The effect of annealing time (in the range of 4-36 h) on Jc and Tc is not too obvious for a given TA. A simple explanation for these effects is that the perfection of the one-dimensional (1-D) Cu-O chains and 2-D CuO networks is related to annealing. A good super-conductivity can be attained as long as the sample has the perfect 2-D Cu-O networks under the preconditon that the perfection of 1-D Cu-O chains is above a given level.

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M3 - 章节

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SN - 0306435985

VL - 36

SP - 447

EP - 452

BT - Advances in Cryogenic Engineering

PB - Publ by Plenum Publ Corp

T2 - Proceedings of the 8th International Cryogenic Materials Conference ICMC

Y2 - 24 July 1989 through 28 July 1989

ER -

Effects of annealing treatment of superconductivity in powder sintered YBCO

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