Thickening of YBa<sub>2</sub>Cu<sub>3</sub>O<i><sub>y</sub></i>-coated Conductors Fabricated by Self-heating Technique Using Pulsed Laser Deposition Method and Superconducting Properties in Magnetic Field

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  • 基板自己加熱方式によるPulsed Laser Deposition 法を用いたYBa<sub>2</sub>Cu<sub>3</sub>O<i><sub>y</sub></i>の厚膜化及び磁場中超伝導特性
  • 基板自己加熱方式によるPulsed Laser Deposition法を用いたYBa₂Cu₃O[y]の厚膜化及び磁場中超伝導特性
  • キバン ジコ カネツ ホウシキ ニ ヨル Pulsed Laser Depositionホウ オ モチイタ YBa ₂ Cu ₃ O[y]ノ アツマクカ オヨビ ジバ チュウ チョウデンドウ トクセイ

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Abstract

<p>We fabricated YBa2Cu3Oy (YBCO)coated conductors (CCs) 0.4 - 8.6 μm in thickness on Hastelloy metal substrates with oxide-textured layers, including IBAD-MgO, which were heated by a self-heating technique (SHT) using the pulsed laser deposition method. The substrate temperature (Ts) measured with a thermocouple or pyrometer was feedback-controlled (FBC) during deposition. It was possible to suppress a-axis grains even in a thick when using the SHT. The critical current (Ic) of the YBCO CCs with a thickness of 4.9 μm reached 1080 A/cm-w at 77 K and in a self-field. In addition, 3.0 - 9.0 vol.%BHO-doped YBCO CCs with a thickness of 3.0 μm were fabricated using pyrometer FBC. The Ic in a magnetic field at 77 K was optimized by adding 3.0 vol.%BHO.</p>

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