D
David K. Christen
Researcher at Oak Ridge National Laboratory
Publications - 365
Citations - 13086
David K. Christen is an academic researcher from Oak Ridge National Laboratory. The author has contributed to research in topics: Superconductivity & Thin film. The author has an hindex of 52, co-authored 365 publications receiving 12790 citations. Previous affiliations of David K. Christen include University of Tennessee.
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Journal ArticleDOI
Synthesis and characterization of chromium-containing, thallium-based 1212 films
J.Y. Lao,J.H. Wang,D.Z. Wang,Y. Tu,S.X Yang,H.L. Wu,Zhifeng Ren,Darren Verebelyi,Mariappan Parans Paranthaman,Tolga Aytug,David K. Christen,Raghu N. Bhattacharya,R. D. Blaugher +12 more
TL;DR: In this paper, superconducting Tl-based, 1212-structured films were grown on both LaAlO 3 and CeO 2 /YSZ substrates by post-deposition annealing in flowing argon gas.
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Influence of randomly oriented columnar defects on the irreversible and reversible magnetization of Tl2Ba2CaCu2Ox superconductor
J. G. Ossandon,James R Thompson,James R Thompson,Lia Krusin-Elbaum,Hyunjeong Kim,David K. Christen,K. J. Song,J. L. Ullmann +7 more
TL;DR: In this paper, the superconductive transition temperature, the Meissner fraction, the intragrain persistent current density against the magnetic field and temperature, and the equilibrium magnetization were modelled using London theory with the addition of vortex-defect interactions, yielding physically reasonable parameters.
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Superconducting Epitaxial ( TlBi ) 0.9Sr1.6Ba0.4Ca2Cu3Ag0.2 O x Film from an Electrodeposited Precursor
Raghu N. Bhattacharya,R. D. Blaugher,Zhifeng Ren,W. Li,J.H. Wang,Mariappan Parans Paranthaman,Darren Verebelyi,David K. Christen +7 more
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Percolative current flow in high-Jc, polycrystalline high-Tc superconductors
Amit Goyal,Eliot D. Specht,David K. Christen,D. M. Kroeger,A. E. Pashitski,A. A. Polyanskii,David C. Larbalestier +6 more
TL;DR: In this article, the percolative nature of current flow in high critical current density polycrystalline superconductors is reviewed and a direct correlation between the grain-orientation texture with current transport in high-Jc TlB2Ca2Cu3Ox thick films and Bi2Sr2Ca 2Cu3 Ox powder-in-tube tapes is obtained.
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Persistent current density and flux creep in Bi-Sr-Ca-Cu-O/Ag tapes with splayed columnar defects from 0.8 GeV proton irradiation
James R. Thompson,L. Krusin-Elbaum,Young-Cheol Kim,David K. Christen,A. D. Marwick,R. Wheeler,Chen Li,Sushil Patel,David T. Shaw,P. Lisowski,J. L. Ullmann +10 more
TL;DR: In this paper, the superconductor was irradiated with 0.8 GeV protons to create columnar defects in the superconductors, which led to an enhanced persistent current density in the CuO planes, displacement of the irreversibility line to higher temperatures and magnetic fields, and a major reduction in the logarithmic time decay rate of the supercurrent density.