Critical current, film thickness and grain alignment for spray-pyrolyzed films of TlBa2Ca2Cu3Ox

Specht, E. D.; Goyal, A.; Kroeger, D. M.; Mogro‐Campero, A.; Bednarczyk, P. J.; Tkaczyk, J. E.; DeLuca, J. A.

doi:10.1016/0921-4534(96)00492-3

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…3 However, owing to the very narrow range of conditions under which this phase can be formed, 4,5 Tl-1223 has remained the most elusive member of the thallium ͑TBCCO͒ HTS family with regard to efficient and reproducible growth of high-quality films by any procedure amenable to large areas and high throughput. 7 Alternative approaches to stabilizing and utilizing this phase in film form include cation substitutions for Tl, 8,9 metal-organic decomposition, 10 and spray pyrolysis 11,12 ͑including processing using a low temperature melt͒. 7 Alternative approaches to stabilizing and utilizing this phase in film form include cation substitutions for Tl, 8,9 metal-organic decomposition, 10 and spray pyrolysis 11,12 ͑including processing using a low temperature melt͒.…”

Section: ͓S0003-6951͑97͒03135-5͔mentioning

confidence: 99%

Efficient route to TlBa2Ca2Cu3O9+x thin films by metal-organic chemical vapor deposition using TlF as a thallination source

McNeely

Belot

Hinds

et al. 1997

Applied Physics Letters

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Thin TlBa2Ca2Cu3O9+x films were grown on single crystal (110) LaAlO3 from metal-organic chemical-vapor deposition-derived Ba–Ca–Cu–Ox precursor films employing Ba(hfa)2⋅mep, Ca(hfa)2⋅tet, and Cu(dpm)2 (hfa=hexafluoroacetylacetonate; dpm=dipivaloylmethanate; tet=tetraglyme; mep=methylethylpentaglyme) as the volatile metal sources. Thallination is then accomplished by annealing the precursor films in the presence of a bulk BaO+CaO+CuO+TlF source at 885 °C in flowing O2. The presence of TlF is essential for nucleating the Tl-1223 phase. The resulting Tl-1223 films are nearly phase-pure, highly oriented, epitaxial by x-ray diffraction, and contain negligible fluoride by windowless energy-dispersive x-ray measurements. The films exhibit a transport measured Tc=103 K and Jc=4.4×104 A/cm2 (77 K, 0 T). Magnetic hysteresis measurements yield Jc=1.9×105 A/cm2 (30 K, 0.01 T) and show considerable flux pinning at low temperatures with Jc=1.4×105 A/cm2 (5 K, 4.5 T).

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Section: ͓S0003-6951͑97͒03135-5͔mentioning

confidence: 99%

Efficient route to TlBa2Ca2Cu3O9+x thin films by metal-organic chemical vapor deposition using TlF as a thallination source

McNeely

Belot

Hinds

et al. 1997

Applied Physics Letters

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“…For scaled-up production of high J c tapes, a simpler and faster method is in urgent demand. Electrochemical [11][12][13] and thermal spray [14][15][16] depositions are among the best choices.…”

mentioning

confidence: 99%

Epitaxial superconducting Tl_0.5Pb_0.5Sr_1.6Ba_0.4Ca₂Cu₃O₉films on LaAlO₃by thermal spray and post-spray annealing

Li¹,

Wang²,

Lao³

et al. 1999

Supercond. Sci. Technol.

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A simple, low-cost, and easily scalable method, thermal spray followed by post-spray annealing, has been successfully demonstrated for fabricating high-J c epitaxial superconducting films of Tl 0.5 Pb 0.5 Sr 1.6 Ba 0.4 Ca 2 Cu 3 O 9 [(Tl,Pb)-1223]. The process was performed by spraying a stoichiometric solution containing Tl, Pb, Sr, Ba, Ca, and Cu nitrates onto LaAlO 3 substrates heated to 300-400 °C. Subsequently, the amorphous films were placed inside a silver containment along with two-semicircular unfired pellets, and were reacted and crystallized by a thermal anneal at 870 o C in air. X-ray diffraction showed that the films consist mainly of c-axis aligned (Tl,Pb)-1223 phase with a small amount of (Tl,Pb)-1212 phase. X-ray ϕ-scans revealed very good epitaxial growth. Four-probe transport measurements on a 4 mm wide and 1.2 µm thick film showed a superconducting transition temperature of 106-109K, with a zero-field critical current of 51 A at 77K, which corresponds to a critical current density of 1.1×10 6 A/cm 2 .

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Ex-Situ Processing of Ti-Containing Films

Lao

Wang

et al.

Second-Generation HTS Conductors

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Critical current, film thickness and grain alignment for spray-pyrolyzed films of TlBa2Ca2Cu3Ox

Cited by 9 publications

References 13 publications

Efficient route to TlBa2Ca2Cu3O9+x thin films by metal-organic chemical vapor deposition using TlF as a thallination source

Efficient route to TlBa2Ca2Cu3O9+x thin films by metal-organic chemical vapor deposition using TlF as a thallination source

Epitaxial superconducting Tl_0.5Pb_0.5Sr_1.6Ba_0.4Ca₂Cu₃O₉films on LaAlO₃by thermal spray and post-spray annealing

Ex-Situ Processing of Ti-Containing Films

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Critical current, film thickness and grain alignment for spray-pyrolyzed films of TlBa2Ca2Cu3Ox

Cited by 9 publications

References 13 publications

Efficient route to TlBa2Ca2Cu3O9+x thin films by metal-organic chemical vapor deposition using TlF as a thallination source

Efficient route to TlBa2Ca2Cu3O9+x thin films by metal-organic chemical vapor deposition using TlF as a thallination source

Epitaxial superconducting Tl0.5Pb0.5Sr1.6Ba0.4Ca2Cu3O9films on LaAlO3by thermal spray and post-spray annealing

Ex-Situ Processing of Ti-Containing Films

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Product

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About

Epitaxial superconducting Tl_0.5Pb_0.5Sr_1.6Ba_0.4Ca₂Cu₃O₉films on LaAlO₃by thermal spray and post-spray annealing