Preparation of enhanced Jc YBCO bulks by powder melting process with a combination of submicron 211 precursor and Pt addition

L. Zhou; S. K. Chen; K. G. Wang; X. Z. Wu; P. X. Zhang; Y. Feng; H. H. Wen; S. L. Li

doi:10.1016/S0921-4534(01)00968-6

Preparation of enhanced J_c YBCO bulks by powder melting process with a combination of submicron 211 precursor and Pt addition

L. Zhou, S. K. Chen, K. G. Wang, X. Z. Wu, P. X. Zhang, Y. Feng, H. H. Wen, S. L. Li

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

8 Scopus citations

Abstract

YBCO bulks with submicron Y₂BaCuO₅(2 1 1) particles have been produced by the powder melting process technique with a combination of submicron 211 precursor and Pt addition under P(O₂) = 1 atm and P(O₂) = 0.21 atm, respectively. The microstructures, oxygen contents, transition temperatures and critical current densities (J_c) of the two types of samples have been studied. The J_c) values of the samples grown under P(O₂) = 0.21 atm and P(O₂) = 1 atm are 4.36 × 10⁶ and 5.57 × 10⁶ A/cm² at 20 K in 1 T field, respectively. At 77 K in 1 T, moreover, they are 2.75 × 10⁵ and 3.43 × 10⁵ A/cm², respectively. Microstructure observations show that the sample prepared under P(O₂) = 1 atm has a high density of stacking faults-like defects within the YBCO matrix around 211 particles. Similar defects were not observed in the sample grown under P(O₂) = 0.21 atm. The oxygen content of the sample produced under P(O₂) = 1 atm is higher than that of the sample produced under P(O₂) = 0.21 atm. They are 6.94 and 6.85, respectively. The corresponding T_c values are 92.4 and 89.4 K, respectively. The different J_c values of the two samples have been discussed by means of their microstructures and T(c) values in this paper.

Original language	English
Pages (from-to)	62-68
Number of pages	7
Journal	Physica C: Superconductivity and its Applications
Volume	371
Issue number	1
DOIs	https://doi.org/10.1016/S0921-4534(01)00968-6
State	Published - 1 Jun 2002
Externally published	Yes

Keywords

Critical current density
Powder melting process
Pt addition
Submicron YBaCuO
YBCO bulk

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10.1016/S0921-4534(01)00968-6

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@article{94dbf1541a0c4b2288de6d84028f4fd6,

title = "Preparation of enhanced Jc YBCO bulks by powder melting process with a combination of submicron 211 precursor and Pt addition",

abstract = "YBCO bulks with submicron Y2BaCuO5(2 1 1) particles have been produced by the powder melting process technique with a combination of submicron 211 precursor and Pt addition under P(O2) = 1 atm and P(O2) = 0.21 atm, respectively. The microstructures, oxygen contents, transition temperatures and critical current densities (Jc) of the two types of samples have been studied. The Jc) values of the samples grown under P(O2) = 0.21 atm and P(O2) = 1 atm are 4.36 × 106 and 5.57 × 106 A/cm2 at 20 K in 1 T field, respectively. At 77 K in 1 T, moreover, they are 2.75 × 105 and 3.43 × 105 A/cm2, respectively. Microstructure observations show that the sample prepared under P(O2) = 1 atm has a high density of stacking faults-like defects within the YBCO matrix around 211 particles. Similar defects were not observed in the sample grown under P(O2) = 0.21 atm. The oxygen content of the sample produced under P(O2) = 1 atm is higher than that of the sample produced under P(O2) = 0.21 atm. They are 6.94 and 6.85, respectively. The corresponding Tc values are 92.4 and 89.4 K, respectively. The different Jc values of the two samples have been discussed by means of their microstructures and T(c) values in this paper.",

keywords = "Critical current density, Powder melting process, Pt addition, Submicron YBaCuO, YBCO bulk",

author = "L. Zhou and Chen, {S. K.} and Wang, {K. G.} and Wu, {X. Z.} and Zhang, {P. X.} and Y. Feng and Wen, {H. H.} and Li, {S. L.}",

year = "2002",

month = jun,

day = "1",

doi = "10.1016/S0921-4534(01)00968-6",

language = "英语",

volume = "371",

pages = "62--68",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier B.V.",

number = "1",

}

TY - JOUR

T1 - Preparation of enhanced Jc YBCO bulks by powder melting process with a combination of submicron 211 precursor and Pt addition

AU - Zhou, L.

AU - Chen, S. K.

AU - Wang, K. G.

AU - Wu, X. Z.

AU - Zhang, P. X.

AU - Feng, Y.

AU - Wen, H. H.

AU - Li, S. L.

PY - 2002/6/1

Y1 - 2002/6/1

N2 - YBCO bulks with submicron Y2BaCuO5(2 1 1) particles have been produced by the powder melting process technique with a combination of submicron 211 precursor and Pt addition under P(O2) = 1 atm and P(O2) = 0.21 atm, respectively. The microstructures, oxygen contents, transition temperatures and critical current densities (Jc) of the two types of samples have been studied. The Jc) values of the samples grown under P(O2) = 0.21 atm and P(O2) = 1 atm are 4.36 × 106 and 5.57 × 106 A/cm2 at 20 K in 1 T field, respectively. At 77 K in 1 T, moreover, they are 2.75 × 105 and 3.43 × 105 A/cm2, respectively. Microstructure observations show that the sample prepared under P(O2) = 1 atm has a high density of stacking faults-like defects within the YBCO matrix around 211 particles. Similar defects were not observed in the sample grown under P(O2) = 0.21 atm. The oxygen content of the sample produced under P(O2) = 1 atm is higher than that of the sample produced under P(O2) = 0.21 atm. They are 6.94 and 6.85, respectively. The corresponding Tc values are 92.4 and 89.4 K, respectively. The different Jc values of the two samples have been discussed by means of their microstructures and T(c) values in this paper.

AB - YBCO bulks with submicron Y2BaCuO5(2 1 1) particles have been produced by the powder melting process technique with a combination of submicron 211 precursor and Pt addition under P(O2) = 1 atm and P(O2) = 0.21 atm, respectively. The microstructures, oxygen contents, transition temperatures and critical current densities (Jc) of the two types of samples have been studied. The Jc) values of the samples grown under P(O2) = 0.21 atm and P(O2) = 1 atm are 4.36 × 106 and 5.57 × 106 A/cm2 at 20 K in 1 T field, respectively. At 77 K in 1 T, moreover, they are 2.75 × 105 and 3.43 × 105 A/cm2, respectively. Microstructure observations show that the sample prepared under P(O2) = 1 atm has a high density of stacking faults-like defects within the YBCO matrix around 211 particles. Similar defects were not observed in the sample grown under P(O2) = 0.21 atm. The oxygen content of the sample produced under P(O2) = 1 atm is higher than that of the sample produced under P(O2) = 0.21 atm. They are 6.94 and 6.85, respectively. The corresponding Tc values are 92.4 and 89.4 K, respectively. The different Jc values of the two samples have been discussed by means of their microstructures and T(c) values in this paper.

KW - Critical current density

KW - Powder melting process

KW - Pt addition

KW - Submicron YBaCuO

KW - YBCO bulk

UR - http://www.scopus.com/inward/record.url?scp=0036603727&partnerID=8YFLogxK

U2 - 10.1016/S0921-4534(01)00968-6

DO - 10.1016/S0921-4534(01)00968-6

M3 - 文章

AN - SCOPUS:0036603727

SN - 0921-4534

VL - 371

SP - 62

EP - 68

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 1

ER -

Preparation of enhanced J_c YBCO bulks by powder melting process with a combination of submicron 211 precursor and Pt addition

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