Simple Route to Grow High-Quality MgB₂ Thin Films by Pyrolysis of Decaborane (B₁₀H₁₄) in Mg Vapor

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概要

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• We report the growth of MgB₂ films by thermally decomposing decaborane (B₁₀H₁₄) in Mg vapor. B₁₀H₁₄, solid at ambient temperature and stable in air, is much more convenient to use as a boron source compared to highly explosive diborane (B₂H₆) which is commonly used in the hybrid physical--chemical vapor deposition of MgB₂ films. MgB₂ films were grown on $c$-cut sapphire substrates held at 400--450 °C by supplying vaporized B₁₀H₁₄ into a pocket heater with high Mg vapor pressure. The resultant films were phase-pure, $c$-axis oriented, and in-plane aligned, and had self-field critical current density of ${\sim}3\times 10^{7}$ A/cm2 at 20 K.

• 2011-07-25

論文 | ランダム

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• プロチウムによる金属の構造・組織制御
• 水素吸蔵合金とその応用

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