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Sol-gel Synthesis of GdAIO_3 Buffer Layers on SrTiO_3 (100) Substrates

机译:SRTIO_3(100)基板上的GDAIO_3缓冲层的溶胶 - 凝胶合成

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To identify the possibility of using GdAlO_3 (GAO) as a buffer layer for YBa_2Cu_3O_(1-δ)^s(YBCO) coated superconductor wire, we report the result of GAO deposition on SrTiO_3 (STO) single crystal substrates by sol-gel processing. Precursor solution was prepared by dissolving stoichiometric quantities of gadolinium hexahydrate and aluminum isoproxide in a mixed binary solvent (2-4 pentanedione:methyl alcohol=1:1). The solutions were spin-coated on STO (100) single crystal substrates and heated at 500°C~1100°C for 2 h in wet Ar-5% H_2 atmosphere. A FESEM observation of the surface morphology of the GAO has shown that it has a very smooth surface with a faceted morphology indicating epitaxy. It was shown in x-ray diffraction characterization that epitaxial GAO films with epitaxial orientation relationship of (001)[112]_(GAO)||(100)[110]_(STO) have been grown on STO (100) substrates.
机译:为了识别使用GDALO_3(GAO)作为YBA_2CU_3O_(1-Δ)^ S(YBCO)涂覆的超导体线的缓冲层的可能性,我们通过溶胶 - 凝胶加工报告高沉积对SRTIO_3(STO)单晶基板上的GAO沉积结果。通过将化学计量的六水合物和铝在混合二元溶剂(2-4戊酰胺:甲醇= 1:1)中溶解化学计量量的六水氧化铝,制备前体溶液。将溶液在STO(100)单晶基质上旋涂,并在湿Ar-5%H_2大气中在500℃〜1100℃下加热2小时。对高保性表面形态的FeSEM观察表明它具有非常光滑的表面,具有指示外延的刻面形态。它在X射线衍射表征中显示,具有(001)[112] _(gaO)|(100)[110] _(STO)的外延取向关系外延Gao膜已在STO(100)基板上生长。

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