Published January 3, 2005
| Version v1
Journal article
Effect of damage by 2 MeV He ions on the normal and superconducting properties of magnesium diboride
Creators
- 1. Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
- 2. Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
- 3. Department of Chemical and Materials Engineering, Arizona State University, Tempe, Arizona 85287-6006 (United States)
- 4. Center for Solid-State Science, Arizona State University, Tempe, Arizona 85287-1704 (United States)
Description
We have studied the effect of damage induced by 2 MeV alpha particles on the critical temperature, Tc, and resistivity, ρ, of MgB2 thin films. This technique allows defects to be controllably introduced into MgB2 in small successive steps. Tc decreases linearly as the intragrain resistivity at 40 K increases, while the intergrain connectivity is not changed. Tc is ultimately reduced to less than 7 K and we see no evidence for a saturation of Tc at about 20 K, contrary to the predictions of the Tc of MgB2 in the dirty limit of interband scattering
Additional details
Identifiers
- DOI
- 10.1063/1.1845591;
- arXiv
- arXiv:cond-mat/0410655v2;
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 86
- Journal Issue
- 1
- Journal Page Range
- p. 012508-012508.3
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36080143
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALPHA PARTICLES; CRITICAL TEMPERATURE; CRYSTAL DEFECTS; ELECTRIC CONDUCTIVITY; HELIUM IONS; ION BEAMS; MAGNESIUM BORIDES; MEV RANGE 01-10; PHYSICAL RADIATION EFFECTS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0013-0065 K; THIN FILMS; TYPE-II SUPERCONDUCTORS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BEAMS; BORIDES; BORON COMPOUNDS; CHARGED PARTICLES; CRYSTAL STRUCTURE; ELECTRICAL PROPERTIES; ENERGY RANGE; FILMS; IONIZING RADIATIONS; IONS; MAGNESIUM COMPOUNDS; MEV RANGE; PHYSICAL PROPERTIES; RADIATION EFFECTS; RADIATIONS; SUPERCONDUCTORS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE
Optional Information
- Notes
- (c) 2005 American Institute of Physics