TY - JOUR
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: [email protected]). 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: [email protected]).
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
M3 - Conference article
AN - SCOPUS:0035268399
SN - 1051-8223
VL - 11
SP - 3118
EP - 3121
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 1 III
T2 - 2000 Applied Superconductivity Conference
Y2 - 17 September 2000 through 22 September 2000
ER -