Enhanced critical current density of YBa2Cu3O x films grown on Nd1/3Eu1/3Gd1/3Ba2Cu3O x with nano-undulated surface morphology
Creators
- 1. Department of Physics and the Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5002 (United States)
- 2. Department of Physics, University of Oslo, Box 1048 Blindern, N-0316 Oslo (Norway)
- 3. Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong (China)
- 4. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States)
Description
We report a simple and easily controllable method where a nano-undulated surface morphology of superconducting Nd1/3Eu1/3Gd1/3Ba2Cu3O x (NEG) films leads to a substantial increase in the critical current density in superconducting YBa2Cu3O x (YBCO) films deposited by pulsed laser deposition on such NEG layers. The enhancement is observed over a wide range of fields and temperatures. Transmission electron microscopy shows that such YBCO films possess a high density of localized areas, typically 20 x 20 nm2 in size, where distortion of atomic planes give rotational (2-5o) moire patterns. Their distribution is random and uniform, and expected to be the origin of the enhanced flux pinning. Magneto-optical imaging shows that these films have excellent macroscopic magnetic uniformity
Additional details
Identifiers
- DOI
- 10.1016/j.physc.2005.11.013;
- arXiv
- arXiv:cond-mat/0506059v1;
- PII
- S0921-4534(05)00801-4;
Publishing Information
- Journal Title
- Physica. C, Superconductivity
- Journal Volume
- 434
- Journal Issue
- 1
- Journal Page Range
- p. 39-44
- ISSN
- 0921-4534
- CODEN
- PHYCE6
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37114987
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BARIUM COMPOUNDS; CRITICAL CURRENT; CRYSTAL GROWTH; CUPRATES; CURRENT DENSITY; DISTRIBUTION; ENERGY BEAM DEPOSITION; EUROPIUM COMPOUNDS; HIGH-TC SUPERCONDUCTORS; LASER RADIATION; LAYERS; MAGNETIC FLUX; MORPHOLOGY; NEODYMIUM COMPOUNDS; PULSED IRRADIATION; RANDOMNESS; SUPERCONDUCTING FILMS; SURFACES; TRANSMISSION ELECTRON MICROSCOPY; YTTRIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; COPPER COMPOUNDS; CURRENTS; DEPOSITION; ELECTRIC CURRENTS; ELECTROMAGNETIC RADIATION; ELECTRON MICROSCOPY; FILMS; IRRADIATION; MICROSCOPY; OXYGEN COMPOUNDS; RADIATIONS; RARE EARTH COMPOUNDS; SUPERCONDUCTORS; SURFACE COATING; TRANSITION ELEMENT COMPOUNDS; TYPE-II SUPERCONDUCTORS
Optional Information
- Copyright
- Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.