Synthesis of Superconducting Epitaxial Films of Ba<SUB>1−<I>x</I></SUB>K<I><SUB>x</SUB></I>BiO<SUB>3</SUB> by Laser Ablation
スポンサーリンク
概要
- 論文の詳細を見る
Superconducting epitaxial films of Ba<SUB>1−<I>x</I></SUB>K<I><SUB>x</SUB></I>BiO<SUB>3</SUB> have been synthesized by laser ablation using a stoichiometric target (<I>x</I>=0.4). The films were deposited at substrate temperatures of 450–550°C in argon at the pressure of 1 Torr with successive annealing at 350°C in oxygen at pressure of 1 atm. The energy density of the laser was 1.5–2.5 J/cm<SUP>2</SUP> per pulse. The deposition temperature and the laser power affect the crystalline property, the superconducting property and the surface morphology. The film deposited at the substrate temperature of 510°C has the highest onset <I>T</I><SUB>c</SUB> of 28 K. The films oriented with respect to 〈100〉 are found to be epitaxial, using a four-circle diffractometer. Cracking in the superconducting films is not found. The film on the MgO substrate with small lattice mismatch exhibits higher zero-resistance <I>T</I><SUB>c</SUB> than those on the other substrates, SrTiO<SUB>3</SUB> and LaSrGaO<SUB>4</SUB>.
- 公益社団法人 応用物理学会の論文
公益社団法人 応用物理学会 | 論文
- Electron Channelling Effect in an Al–Fe–Cu Quasicrystal
- Construction and Performance of a Large-Aperture Wire-Chamber Spectrometer for Pion Scattering Experiments at KEK
- Effect of Plasma Injection on Cold Wall Type MHD Generator
- Development of Scanning μ-RHEED Microscopy for Imaging Polycrystal Grain Structure in LSI
- Boundary Layer Cooling Effect on Semi-Hot Wall Type MHD Channel