用三源热共蒸法制备的二十厘米长涂层导体及其显微结构

低温物理学报 , 2005, 27(z1): 769-774. doi: 10.3969/j.issn.1000-3258.2005.z1.073

用三源热共蒸法制备的二十厘米长涂层导体及其显微结构

胡倾宇 ^1, , 路荣涛 ^2, , 郭玉良 ^3, , 周玉祥 ^4, , ^5,

1.海泰超导通讯科技,天津,有限公司,天津,300384

2.海泰超导通讯科技,天津,有限公司,天津,300384

3.海泰超导通讯科技,天津,有限公司,天津,300384

4.休斯敦大学德克萨斯超导中心及机械工程系,美国德克萨斯州,77204

5.休斯敦大学德克萨斯超导中心及机械工程系,美国德克萨斯州,77204

TWENTY CENTIMETER LONG COATED CONDUCTORS PREPARED USING THERMAL CO-EVAPORATION AND ITS MICROSTRUCTURES

用真空三源热共蒸发法制备了二十厘米长的涂层导体,其宽度为1厘米, 超导层宽度为0.9 厘米,厚度为600纳米.使用直流四引线法测试,导体在77K时的临界电流大于120安培,相应的临界电流密度大于每平方厘米220万安培.表征电流-电压曲线超导转变陡峭度的n值为35.显微结构观察表明其膜层显微形貌与单晶衬底上的薄膜极其相似.X射线衍射研究表明超导薄膜的相成分纯,面内FWHM为Δφ=6.23°,面外FWHM为Δω=3.84°,表明涂层的优良织构.在此文章将详细报告导体的制备和显微结构及物理测试结果.

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用三源热共蒸法制备的二十厘米长涂层导体及其显微结构

TWENTY CENTIMETER LONG COATED CONDUCTORS PREPARED USING THERMAL CO-EVAPORATION AND ITS MICROSTRUCTURES

参考文献