Growth of Hg0.8Pb0.2Ba2Ca2Cu3O 8+δ thick films on Ag using a modified process route

Jianhua Su; P. V.P.S.S. Sastry; Justin Schwartz

doi:10.1109/77.919723

Growth of Hg_0.8Pb_0.2Ba₂Ca₂Cu₃O_8+δ thick films on Ag using a modified process route

Jianhua Su, P. V.P.S.S. Sastry, Justin Schwartz

College of Engineering

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

Thick films of Hg_0.8Pb_0.2Ba₂Ca₂Cu₃O_8+δ (HgPb1223) superconductor were fabricated by dip-coating Pb_0.2Ba₂Ca₂Cu₃O_7+δ precursor onto Ag and subsequently reacting in Hg vapor to form the superconducting phase. It was found that by "burying" the films in precursor powder during the reaction, increased HgPb1223 phase purity and increased size of aligned grain colonies were obtained. Such microstructural improvements lead to wider magnetization hysteresis. The optimum superconducting transition temperatures of 133 K were observed in these films. The results showed that this process has a positive influence on the formation and growth of HgPb1223. A pre-pressing process enabled the growth of HgPb1223 grains with relatively dense microstructure and improved connectivity. The resulting films exhibited a transport J_c value of at least 1.5 × 10³ A/cm² at 4.2 K in a zero magnetic field.

Original language	English (US)
Pages (from-to)	3118-3121
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	11
Issue number	1 III
DOIs	https://doi.org/10.1109/77.919723
State	Published - Mar 2001
Event	2000 Applied Superconductivity Conference - Virginia Beach, VA, United States Duration: Sep 17 2000 → Sep 22 2000

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/77.919723

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@article{4d14b9c2175d4d64956d02a2694dd443,

title = "Growth of Hg0.8Pb0.2Ba2Ca2Cu3O 8+δ thick films on Ag using a modified process route",

abstract = "Thick films of Hg0.8Pb0.2Ba2Ca2Cu3O 8+δ (HgPb1223) superconductor were fabricated by dip-coating Pb0.2Ba2Ca2Cu3O7+δ precursor onto Ag and subsequently reacting in Hg vapor to form the superconducting phase. It was found that by {"}burying{"} the films in precursor powder during the reaction, increased HgPb1223 phase purity and increased size of aligned grain colonies were obtained. Such microstructural improvements lead to wider magnetization hysteresis. The optimum superconducting transition temperatures of 133 K were observed in these films. The results showed that this process has a positive influence on the formation and growth of HgPb1223. A pre-pressing process enabled the growth of HgPb1223 grains with relatively dense microstructure and improved connectivity. The resulting films exhibited a transport Jc value of at least 1.5 × 103 A/cm2 at 4.2 K in a zero magnetic field.",

author = "Jianhua Su and Sastry, {P. V.P.S.S.} and Justin Schwartz",

note = "Funding Information: Manuscript received August 18, 2000. This work was supported by the National High Magnetic Field Laboratory through the In-House Research Program (IHRF'). Jianhua Su is with the National High Magnetic Field Laboratory and FAMU - FSU College of Engineering, Tallahassee, FL 32310, USA (telephone: 850-644-2294, email: jhsu@magnet.fsu.edu). P.V.P.S.S. Sastry is with the National High Magnetic Field Laboratory, Tallahassee, FL323 IO, USA (telephone: 850-644-1447, email: pamidi@magnet,fsu.edu). J. Schwartz is with the National High Magnetic Field Laboratory and FAMU - FSU College of Engineering, Tallahassee, FL 32310, USA (telephone: 850-644-0874, email: schwartz@magnet.fsu.edu). Funding Information: This work was supported by the National High Magnetic Field Laboratory through the In-House Research Program (IHRP). We thank Ulf Trociewitz and Robert Goddard for their help with the SQUID and ESEM, respectively.; 2000 Applied Superconductivity Conference ; Conference date: 17-09-2000 Through 22-09-2000",

year = "2001",

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doi = "10.1109/77.919723",

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T1 - Growth of Hg0.8Pb0.2Ba2Ca2Cu3O 8+δ thick films on Ag using a modified process route

AU - Su, Jianhua

AU - Sastry, P. V.P.S.S.

AU - Schwartz, Justin

N1 - Funding Information: Manuscript received August 18, 2000. This work was supported by the National High Magnetic Field Laboratory through the In-House Research Program (IHRF'). Jianhua Su is with the National High Magnetic Field Laboratory and FAMU - FSU College of Engineering, Tallahassee, FL 32310, USA (telephone: 850-644-2294, email: jhsu@magnet.fsu.edu). P.V.P.S.S. Sastry is with the National High Magnetic Field Laboratory, Tallahassee, FL323 IO, USA (telephone: 850-644-1447, email: pamidi@magnet,fsu.edu). J. Schwartz is with the National High Magnetic Field Laboratory and FAMU - FSU College of Engineering, Tallahassee, FL 32310, USA (telephone: 850-644-0874, email: schwartz@magnet.fsu.edu). Funding Information: This work was supported by the National High Magnetic Field Laboratory through the In-House Research Program (IHRP). We thank Ulf Trociewitz and Robert Goddard for their help with the SQUID and ESEM, respectively.

PY - 2001/3

Y1 - 2001/3

N2 - Thick films of Hg0.8Pb0.2Ba2Ca2Cu3O 8+δ (HgPb1223) superconductor were fabricated by dip-coating Pb0.2Ba2Ca2Cu3O7+δ precursor onto Ag and subsequently reacting in Hg vapor to form the superconducting phase. It was found that by "burying" the films in precursor powder during the reaction, increased HgPb1223 phase purity and increased size of aligned grain colonies were obtained. Such microstructural improvements lead to wider magnetization hysteresis. The optimum superconducting transition temperatures of 133 K were observed in these films. The results showed that this process has a positive influence on the formation and growth of HgPb1223. A pre-pressing process enabled the growth of HgPb1223 grains with relatively dense microstructure and improved connectivity. The resulting films exhibited a transport Jc value of at least 1.5 × 103 A/cm2 at 4.2 K in a zero magnetic field.

AB - Thick films of Hg0.8Pb0.2Ba2Ca2Cu3O 8+δ (HgPb1223) superconductor were fabricated by dip-coating Pb0.2Ba2Ca2Cu3O7+δ precursor onto Ag and subsequently reacting in Hg vapor to form the superconducting phase. It was found that by "burying" the films in precursor powder during the reaction, increased HgPb1223 phase purity and increased size of aligned grain colonies were obtained. Such microstructural improvements lead to wider magnetization hysteresis. The optimum superconducting transition temperatures of 133 K were observed in these films. The results showed that this process has a positive influence on the formation and growth of HgPb1223. A pre-pressing process enabled the growth of HgPb1223 grains with relatively dense microstructure and improved connectivity. The resulting films exhibited a transport Jc value of at least 1.5 × 103 A/cm2 at 4.2 K in a zero magnetic field.

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U2 - 10.1109/77.919723

DO - 10.1109/77.919723

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EP - 3121

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

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T2 - 2000 Applied Superconductivity Conference

Y2 - 17 September 2000 through 22 September 2000

ER -

Growth of Hg_0.8Pb_0.2Ba₂Ca₂Cu₃O_8+δ thick films on Ag using a modified process route

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