Affiliation:
1. National Creative Research Initiative Center for Superconductivity, Department of Physics, Pohang University of Science and Technology, Pohang 790–784, Korea.
Abstract
We fabricated high-quality
c
axis–oriented epitaxial MgB
2
thin films using a pulsed laser deposition technique. The thin films grown on (1 1̄ 0 2) Al
2
O
3
substrates have a transition temperature of 39 kelvin. The critical current density in zero field is ∼6 × 10
6
amperes per cubic centimeter at 5 kelvin and ∼3 × 10
5
amperes per cubic centimeter at 35 kelvin, which suggests that this compound has potential for electronic device applications, such as microwave devices and superconducting quantum interference devices. For the films deposited on Al
2
O
3
, x-ray diffraction patterns indicate a highly
c
axis–oriented crystal structure perpendicular to the substrate surface.
Publisher
American Association for the Advancement of Science (AAAS)
Reference14 articles.
1. Superconductivity at 39 K in magnesium diboride
2. W. N. Kang et al. preprint available at (2001).
3. C. U. Jung et al. preprint available at (2001).
4. Y. Takano et al. preprint available at (2001).
5. Thermodynamic and Transport Properties of SuperconductingMg10B2
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