Abstract
Superconducting MgB2thin films were prepared on Al2O3(0001) and MgO(100) substrates. Boron thin films were deposited by the electron-beam evaporation followed by postannealing process with magnesium. Proper postannealing conditions were investigated to grow good superconducting MgB2thin films. The x-ray diffraction patterns showed randomly oriented growth of MgB2phase in our thin films. The surface morphology was examined by scanning electron microscope and atomic force microscope. Critical current density (JC) measured by transport method was about 107A/cm2at 15 K, and superconducting transition temperature (TC) was ∼39 K in the MgB2thin films on Al2O3. © 2001 American Institute of Physics.
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CITATION STYLE
Moon, S. H., Yun, J. H., Lee, H. N., Kye, J. I., Kim, H. G., Chung, W., & Oh, B. (2001). High critical current densities in superconducting MgB2thin films. Applied Physics Letters, 79(15), 2429–2431. https://doi.org/10.1063/1.1407854
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