High critical current densities in superconducting MgB2 thin films | Zendy

SeungHyun Moon | Zendy; Jinyoung Yun | Zendy; H. N. Lee | Zendy; Jeong-Il Kye | Zendy; H. G. Kim | Zendy; Woo Kyung Chung | Zendy; B. Oh | Zendy

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High critical current densities in superconducting MgB2 thin films

Author(s) -

SeungHyun Moon,

Jinyoung Yun,

H. N. Lee,

Jeong-Il Kye,

H. G. Kim,

Woo Kyung Chung,

B. Oh

Publication year - 2001

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1407854

Subject(s) - thin film , superconductivity , annealing (glass) , scanning electron microscope , materials science , magnesium diboride , electron beam physical vapor deposition , diffraction , boron , analytical chemistry (journal) , carbon film , critical current , condensed matter physics , nanotechnology , optics , chemistry , composite material , physics , organic chemistry , chromatography

Superconducting MgB2 thin films were prepared on Al2O3(0001) and MgO(100)substrates. Boron thin films were deposited by the electron-beam evaporationfollowed by post-annealing process with magnesium. Proper post annealingconditions were investigated to grow good superconducting MgB2 thin films. TheX-ray diffraction patterns showed randomly orientated growth of MgB2 phase inour thin films. The surface morphology was examined by scanning electronmicroscope (SEM) and atomic force microscope (AFM). Critical current density(Jc) measured by transport method was about 10^7 A/cm^2 at 15 K, andsuperconducting transition temperature (Tc) was ~ 39 K in the MgB2 thin filmson Al2O3.Comment: 13 pages, 4 figures, submitted on Apr. 4, 2001, only one pdf fil

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