The influence of post-annealing on the Pb3(Bi0.5Sr2.5)Ca2CuOy phase evolution and superconducting properties of (Bi,Pb)-2223/Ag tapes

T. M. Qu; L. Zhao; X. C. Wang; P. Li; Y. Song; Z. Han

doi:10.1016/j.physc.2007.02.032

The influence of post-annealing on the Pb₃(Bi_0.5Sr_2.5)Ca₂CuO_y phase evolution and superconducting properties of (Bi,Pb)-2223/Ag tapes

T. M. Qu^*
, L. Zhao
, X. C. Wang
, P. Li
, Y. Song
, Z. Han

^*Corresponding author for this work

Tsinghua University

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Post-annealing (PA) at reduced oxygen atmosphere was proved to be quite effective for increasing the critical current (I_c) of (Bi,Pb)-2223/Ag superconducting tapes. In this work, PA was performed at various oxygen partial pressure (pO₂ = 0.01-0.50 bar). The dwelling temperature was chosen in the region of 700-840 °C with respect to pO₂. It was found from XRD patterns that the Pb₃(Bi_0.5Sr_2.5)Ca₂CuO_y (3321) phase appeared after PA, whose amount changed with pO₂ and PA temperature. I_c can be increased by up to 24% if pO₂ < 0.20 bar. The optimum window for achieving high I_c values became wider at lower pO₂. The critical temperature (T_c) was also changed after PA. An optimum 3321 phase content was found to be related to the maximum T_c.

Original language	English
Pages (from-to)	833-836
Number of pages	4
Journal	Physica C: Superconductivity and its Applications
Volume	463-465
Issue number	SUPPL.
DOIs	https://doi.org/10.1016/j.physc.2007.02.032
State	Published - 1 Oct 2007
Externally published	Yes

Keywords

3321
Bi-2223
Critical current
Critical temperature
Post-annealing

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10.1016/j.physc.2007.02.032

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title = "The influence of post-annealing on the Pb3(Bi0.5Sr2.5)Ca2CuOy phase evolution and superconducting properties of (Bi,Pb)-2223/Ag tapes",

abstract = "Post-annealing (PA) at reduced oxygen atmosphere was proved to be quite effective for increasing the critical current (Ic) of (Bi,Pb)-2223/Ag superconducting tapes. In this work, PA was performed at various oxygen partial pressure (pO2 = 0.01-0.50 bar). The dwelling temperature was chosen in the region of 700-840 °C with respect to pO2. It was found from XRD patterns that the Pb3(Bi0.5Sr2.5)Ca2CuOy (3321) phase appeared after PA, whose amount changed with pO2 and PA temperature. Ic can be increased by up to 24\% if pO2 < 0.20 bar. The optimum window for achieving high Ic values became wider at lower pO2. The critical temperature (Tc) was also changed after PA. An optimum 3321 phase content was found to be related to the maximum Tc.",

keywords = "3321, Bi-2223, Critical current, Critical temperature, Post-annealing",

author = "Qu, \{T. M.\} and L. Zhao and Wang, \{X. C.\} and P. Li and Y. Song and Z. Han",

year = "2007",

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doi = "10.1016/j.physc.2007.02.032",

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T1 - The influence of post-annealing on the Pb3(Bi0.5Sr2.5)Ca2CuOy phase evolution and superconducting properties of (Bi,Pb)-2223/Ag tapes

AU - Qu, T. M.

AU - Zhao, L.

AU - Wang, X. C.

AU - Li, P.

AU - Song, Y.

AU - Han, Z.

PY - 2007/10/1

Y1 - 2007/10/1

N2 - Post-annealing (PA) at reduced oxygen atmosphere was proved to be quite effective for increasing the critical current (Ic) of (Bi,Pb)-2223/Ag superconducting tapes. In this work, PA was performed at various oxygen partial pressure (pO2 = 0.01-0.50 bar). The dwelling temperature was chosen in the region of 700-840 °C with respect to pO2. It was found from XRD patterns that the Pb3(Bi0.5Sr2.5)Ca2CuOy (3321) phase appeared after PA, whose amount changed with pO2 and PA temperature. Ic can be increased by up to 24% if pO2 < 0.20 bar. The optimum window for achieving high Ic values became wider at lower pO2. The critical temperature (Tc) was also changed after PA. An optimum 3321 phase content was found to be related to the maximum Tc.

AB - Post-annealing (PA) at reduced oxygen atmosphere was proved to be quite effective for increasing the critical current (Ic) of (Bi,Pb)-2223/Ag superconducting tapes. In this work, PA was performed at various oxygen partial pressure (pO2 = 0.01-0.50 bar). The dwelling temperature was chosen in the region of 700-840 °C with respect to pO2. It was found from XRD patterns that the Pb3(Bi0.5Sr2.5)Ca2CuOy (3321) phase appeared after PA, whose amount changed with pO2 and PA temperature. Ic can be increased by up to 24% if pO2 < 0.20 bar. The optimum window for achieving high Ic values became wider at lower pO2. The critical temperature (Tc) was also changed after PA. An optimum 3321 phase content was found to be related to the maximum Tc.

KW - 3321

KW - Bi-2223

KW - Critical current

KW - Critical temperature

KW - Post-annealing

UR - https://www.scopus.com/pages/publications/34548462167

U2 - 10.1016/j.physc.2007.02.032

DO - 10.1016/j.physc.2007.02.032

M3 - 文章

AN - SCOPUS:34548462167

SN - 0921-4534

VL - 463-465

SP - 833

EP - 836

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - SUPPL.

ER -

The influence of post-annealing on the Pb₃(Bi_0.5Sr_2.5)Ca₂CuO_y phase evolution and superconducting properties of (Bi,Pb)-2223/Ag tapes

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Keywords

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