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.
Papers
More filters
Journal ArticleDOI
High critical current density superconducting tapes by epitaxial deposition of YBa2Cu3Ox thick films on biaxially textured metals
Amit Goyal,David P. Norton,John D. Budai,Mariappan Parans Paranthaman,Eliot D. Specht,D. M. Kroeger,David K. Christen,Q. He,B. Saffian,Frederick Alyious List,Dominic F. Lee,Patrick M Martin,C.E. Klabunde,E. Hartfield,V. K. Sikka +14 more
TL;DR: Deposited conductors made using this technique offer a potential route for the fabrication of long lengths of high‐Jc wire capable of carrying high currents in high magnetic fields and at elevated temperatures.
Journal Article
High critical current density superconducting tapes by epitaxial deposition of YBa2Cu3Ox thick films on biaxially textured metals
Amit Goyal,David P. Norton,John D. Budai,Mariappan Parans Paranthaman,Eliot D. Specht,D. M. Kroeger,David K. Christen,Q. He,B. Saffian,Frederick Alyious List,Dominic F. Lee,Patrick M Martin,C.E. Klabunde,E. Hartfield,V. K. Sikka +14 more
TL;DR: In this article, a method to obtain long lengths of flexible, biaxially oriented substrates with smooth, chemically compatible surfaces for epitaxial growth of high-temperature superconductors is reported.
Journal ArticleDOI
Epitaxial YBa2Cu3O7 on Biaxially Textured Nickel (001): An Approach to Superconducting Tapes with High Critical Current Density
David P. Norton,Amit Goyal,John D. Budai,David K. Christen,Donald M. Kroeger,Eliot D. Specht,Q. He,Bernd Saffian,Mariappan Parans Paranthaman,C.E. Klabunde,Dominic F. Lee,Brian C. Sales,Fred List +12 more
TL;DR: In this article, an inplane aligned, c axis-oriented YBa2Cu3O7 (YBCO) films with superconducting critical current densities Jc as high as 700,000 amperes per square centimeter at 77 kelvin have been grown on thermomechanically rolled-textured nickel (001) tapes by pulsed-laser deposition.
Journal ArticleDOI
Irradiation-free, columnar defects comprised of self-assembled nanodots and nanorods resulting in strongly enhanced flux-pinning in YBa2Cu3O7−δ films
Amit Goyal,S. Kang,Keith J. Leonard,Patrick M Martin,Albert A. Gapud,Maria Varela,Mariappan Parans Paranthaman,A.O. Ijaduola,Eliot D. Specht,James R Thompson,James R Thompson,David K. Christen,Stephen J. Pennycook,F.A. List +13 more
TL;DR: In this paper, a simple and practically scalable technique was used to produce long, nearly continuous vortex pins along the c-axis in YBa2Cu3O7?? (YBCO), in the form of self-assembled stacks of BaZrO3 (BZO) nanodots and nanorods.
Journal ArticleDOI
Two-band superconductivity in LaFeAsO0.89F0.11 at very high magnetic fields.
Frank Hunte,Jan Jaroszynski,Alex Gurevich,David C. Larbalestier,Rongying Jin,Athena S. Sefat,Michael A. McGuire,Brian C. Sales,David K. Christen,David Mandrus +9 more
TL;DR: In this article, the authors report very high-field resistance measurements of LaFeAsO0.89F0.11 up to 45 T, which show a remarkable enhancement of the upper critical field Bc2 as compared to values expected from the slopes dBc2/dT ≈ 2 T/K near Tc, particularly at low temperatures where the deduced Bc 2(0) ≈ 63-65 T exceeds the paramagnetic limit.