Properties of MgB2 thin films with carbon doping. Pogrebnyakov, A., Xi, X., Redwing, J., Vaithyanathan, V, Schlom, D., Soukiassian, A, Mi, S., Jia, C., Giencke, J., Eom, C., Chen, J, Hu, Y., Cui, Y, & Li, Q APPLIED PHYSICS LETTERS, 85(11):2017-2019, SEP 13, 2004. doi abstract bibtex We have studied structural and superconducting properties of MgB2 thin films doped with carbon during the hybrid physical-chemical vapor deposition process. A carbon-containing precursor metalorganic bis(methylcyclopentadienyl)magnesium was added to the carrier gas to achieve carbon doping. As the amount of carbon in the film increases, the resistivity increases, T-c decreases, and the upper critical field increases dramatically as compared to clean films. The self-field J(c) in the carbon doped film is lower than that in the clean film, but J(c) remains relatively high to much higher magnetic fields, indicating stronger pinning. Structurally, the doped films are textured with columnar nano-grains and highly resistive amorphous areas at the grain boundaries. The carbon doping approach can be used to produce MgB2 materials for high magnetic-field applications. (C) 2004 American Institute of Physics.
@article{ ISI:000223923300050,
Author = {Pogrebnyakov, AV and Xi, XX and Redwing, JM and Vaithyanathan, V and
Schlom, DG and Soukiassian, A and Mi, SB and Jia, CL and Giencke, JE and
Eom, CB and Chen, J and Hu, YF and Cui, Y and Li, Q},
Title = {{Properties of MgB2 thin films with carbon doping}},
Journal = {{APPLIED PHYSICS LETTERS}},
Year = {{2004}},
Volume = {{85}},
Number = {{11}},
Pages = {{2017-2019}},
Month = {{SEP 13}},
Abstract = {{We have studied structural and superconducting properties of MgB2 thin
films doped with carbon during the hybrid physical-chemical vapor
deposition process. A carbon-containing precursor metalorganic
bis(methylcyclopentadienyl)magnesium was added to the carrier gas to
achieve carbon doping. As the amount of carbon in the film increases,
the resistivity increases, T-c decreases, and the upper critical field
increases dramatically as compared to clean films. The self-field J(c)
in the carbon doped film is lower than that in the clean film, but J(c)
remains relatively high to much higher magnetic fields, indicating
stronger pinning. Structurally, the doped films are textured with
columnar nano-grains and highly resistive amorphous areas at the grain
boundaries. The carbon doping approach can be used to produce MgB2
materials for high magnetic-field applications. (C) 2004 American
Institute of Physics.}},
DOI = {{10.1063/1.1782258}},
ISSN = {{0003-6951}},
EISSN = {{1077-3118}},
ResearcherID-Numbers = {{Schlom, Darrell/J-2412-2013
Eom, Chang-Beom/I-5567-2014
}},
ORCID-Numbers = {{Schlom, Darrell/0000-0003-2493-6113
Redwing, Joan/0000-0002-7906-452X}},
Unique-ID = {{ISI:000223923300050}},
}
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A carbon-containing precursor metalorganic bis(methylcyclopentadienyl)magnesium was added to the carrier gas to achieve carbon doping. As the amount of carbon in the film increases, the resistivity increases, T-c decreases, and the upper critical field increases dramatically as compared to clean films. The self-field J(c) in the carbon doped film is lower than that in the clean film, but J(c) remains relatively high to much higher magnetic fields, indicating stronger pinning. Structurally, the doped films are textured with columnar nano-grains and highly resistive amorphous areas at the grain boundaries. The carbon doping approach can be used to produce MgB2 materials for high magnetic-field applications. 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A carbon-containing precursor metalorganic\n bis(methylcyclopentadienyl)magnesium was added to the carrier gas to\n achieve carbon doping. As the amount of carbon in the film increases,\n the resistivity increases, T-c decreases, and the upper critical field\n increases dramatically as compared to clean films. The self-field J(c)\n in the carbon doped film is lower than that in the clean film, but J(c)\n remains relatively high to much higher magnetic fields, indicating\n stronger pinning. Structurally, the doped films are textured with\n columnar nano-grains and highly resistive amorphous areas at the grain\n boundaries. The carbon doping approach can be used to produce MgB2\n materials for high magnetic-field applications. 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