Effect of Inclusions on Magnetostriction in Superconducting Cylinder with Exponential Distribution of Critical-Current Density
- 32 Downloads
The magnetoelastic behaviour subjected to the electromagnetic body force induced by flux pinning is studied with Kim model for zero-field cooling (ZFC) magnetization process, in which the non-uniform parameter η is considered for inclusion-superconducting matrix system. For superconducting composites, the effect of inhomogeneous distribution of critical current density on effective magnetostriction is also obtained based on the plane strain approach. The results show that the exponential distribution of critical-current density will lead to a larger trapped field and magnetostriction inside the inhomogeneous sample, which also means that it is worthwhile to investigate the magnetoelastic problem of bulk superconductors with inhomogeneous distribution of critical-current density.
KeywordsMagnetostriction Exponential distribution of critical-current density Nonsuperconducting inclusion Kim model
This research was supported by the fund of Natural Science Foundation of China (No. 11662009) and Natural Science Foundation of Gansu Province (No. 17JR5RA129).
- 2.Gao, Z.W., Zheng, Z.Y.: Effects of the interfacial transition on the giant magnetostriction in a superconductor–substrate structure. IEEE Trans. Appl. Supercond. 26, 1 (2016)Google Scholar
- 12.Zhao, Y.F., Pan, B.C., Liu, Z.G.: Effect of magnetic inclusions on the effective magnetostriction of bulk superconductors. . Journal of Low Temperature Physics, 192, 88 (2018)Google Scholar
- 13.Rodriguez, J.P., Barnes, P.N., Varanasi, C.V.: In-field critical current of type-II superconductors caused by strain from nanoscale columnar inclusions. Physical Review B Condensed Matter, 78, 052505 (2012)Google Scholar
- 16.Inada, R., Nakamura, Y., Oota, A.: Numerical analysis for AC losses in single-layer cables composed of rectangular superconducting strips with various lateral Jc distributions. J. Phys.: Conf. Ser. 97, 012324 (2008)Google Scholar