The phenomenon of the superheating of YBCO thin film and its application in processing REBCO bulk
Creators
- 1. Department of Physics, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240 (China)
Description
During heating from room temperature to 1060 deg. C, a novel superheating phenomenon (up to over 45k) in YBa2Cu3Oz (YBCO or Y123) thin film was found. In order to clarify the origin of this superheating, the entire melting evolution of the film was observed in situ using a high temperature optical microscope. The semi-coherent interface between the YBCO film and the single-crystalline MgO substrate, as well as the unwettability of the Ba-Cu-O melt, was found to play a most significant role in causing the superheating. Furthermore, evident discrepancies in the degree of superheating and melting behaviours were observed between two YBCO thin films which have different microstructures, characterized by means of atomic force microscopy and Raman spectroscopy. The mechanism of the melting discrepancy was discussed in detail. Finally, as an application of the superheating phenomenon, a large single-grain YBCO superconductor was grown by using a homoseed of YBCO thin film
Availability note (English)
Available online at http://stacks.iop.org/0953-2048/19/S423/sust6_7_S01.pdf or at the Web site for the journal Superconductor Science and Technology (ISSN 1361-6668) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-2048/19/S423/sust6_7_S01.pdf;
- DOI
- 10.1088/0953-2048/19/7/S01;
- PII
- S0953-2048(06)10163-3;
Publishing Information
- Journal Title
- Superconductor Science and Technology
- Journal Volume
- 19
- Journal Issue
- 7
- Journal Page Range
- p. S423-S428
- ISSN
- 0953-2048
- CODEN
- SUSTEF
Conference
- Title
- 5. international workshop on processing and applications of superconducting (RE)BCO large grain materials
- Acronym
- PASREG 2005
- Dates
- 21-23 Oct 2005
- Place
- Tokyo (Japan)
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37085056
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ATOMIC FORCE MICROSCOPY; BARIUM COMPOUNDS; CUPRATES; HIGH-TC SUPERCONDUCTORS; MAGNESIUM OXIDES; MELTING; MICROSTRUCTURE; OPTICAL MICROSCOPES; RAMAN SPECTROSCOPY; SUPERHEATING; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; TEMPERATURE RANGE 1000-4000 K; THIN FILMS; YTTRIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; FILMS; HEATING; LASER SPECTROSCOPY; MAGNESIUM COMPOUNDS; MICROSCOPES; MICROSCOPY; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; SPECTROSCOPY; SUPERCONDUCTORS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; TYPE-II SUPERCONDUCTORS