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检索条件"作者=sven linzen.frank schmidl"
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Flip-chip-type high- T_c gradiometer for biomagnetic measurements in unshielded environment
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Science China Mathematics 2000年 第1期43卷 82-87页
作者: 田永君 王天生 陈珂 漆汉宏 陈烈 郑东宁 sven linzen.frank schmidl Paul SEIDEL National Laboratory for Superconductivity Institute of Physics Chinese Academy of Sciences Beijing 100080 China College of Materials Science and Chemical Engineering Yanshan University Qinhuangdao 066004 China Institut fur Festkorperphysik Friedrich-Schiller-Universitat Jena D-07743 Jena Germany Institut fur Festkorperphysik Friedrich-Schiller-Universitat Jena D-07743 Jena Germany A flip-chip-type gradiometer has been constructed with a 10 mm ×5 mm planar DC-SQUID gradiometer fabricated on a SrTiO3 bicrystal substrate and a flux transformer made from a YB-CO* /YBCO/CeO2/YSZ multilayer on a φ50.8 mm Si wafer. The coupling coefficient between the flux transformer and the planar gradiometer is 0.18. The transformer increases effectively the resolution of the gradiometer. A magnetic field gradient resolution of 73 fT.cm-1.Hz-1/2 in the white region and 596 fT.cm-1Hz-1/2 at 1 Hz has been obtained. High quality magnetocardiogram signals have been successfully measured by using this flip-chip-type gradiometer in an unshielded environment.
A flip-chip-type gradiometer has been constructed with a 10 mm × 5 mm planar DCSQUID gradiometer fabricated on a SrTiO3 bicrystal substrate and a flux transformer made from a YBCO*/YBCO/CeO2/YSZ multilayer on ?50.8 m... 详细信息
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