Mechanical properties and bending strain effect on Cu-Ni sheathed MgB2 superconducting tape

• Published in: Physica. C, Superconductivity Superconductivity, 2004-07, Vol.406 (1-2), p.53-57
• Main Authors: MINYI FU, JIANGXING CHEN, ZHENGKUAN JIAO, KUMAKURA, H, TOGANO, K, LIREN DING, YONG ZHANG, ZHIYOU CHEN, HANMIN HAN, JINGLIN CHEN
• Format: Article
• Language: English
• Subjects: Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Critical currents; Cuprates superconductors (high tc and insulating parent compounds); Electronics; Exact sciences and technology; Mechanical and acoustical properties of condensed matter; Physics; Properties of type I and type II superconductors; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Superconducting devices; Superconductivity
• ISSN: 0921-4534; 1873-2143
• DOI: 10.1016/j.physc.2004.02.179

The Young's modulus (E) of Cu-Ni sheathed MgB2 monofilament tape was measured using electric method. It is about 8.05 x 1010 Pa, the same order of Cu and its alloys. We found that the lower E value of the MgB2 component seemed to relate to the lower filament density. The benefits of pre-compression in filaments were discussed in terms of improving stress distribution in the wires and tapes during winding and operation of superconducting magnets. The magnetic field dependence of Jc was investigated on the sample subjected to various strain levels through bending with different radii at 4.2 K.