Coexistence of critical and normal state magnetostrictions in type II superconductors: A model exploration

Abstract

Hysteretic behavior of microwave second harmonic emission by superconductors in the critical state AIP Conf. Exploiting the simple formula proposed by Ikuta et al. ͓Phy. Rev. Lett. 70, 2166 ͑1993͔͒ to describe the magnetostriction of high T C superconductors and introducing a B 2 dependent magnetic flux density component, as proposed by Koziol and Dunlap ͓J. Appl. Phys. 79, 4662 ͑1996͔͒, we reproduce families of magnetostriction curves measured by Nabialek et al. ͓Physica B 319, 286 ͑2002͔͒ and de Visser et al. ͓Phys. Rev. B 45, 2962 ͑1992͔͒, using a simple expression for the dependence of the critical current density J C on the magnetic field in each analysis.

Fracture problem of a nonhomogeneous high temperature superconductor slab based on real fundamental solutions

“…The fluxpinning-induced magnetostriction phenomenon was firstly described by Ikuta et al [5,6]. Çelebi and _ Inanir reported normalstate contribution on the pinning induced magnetostriction [7,8]. The mechanical stress caused by flux pinning on superconductor was investigated theoretically by Johansen and Yong [9,10].…”

Peeling stress analysis for an inhomogeneous high-Tc superconductor with a discontinuous interface at the substrate

“…For orthotropic YBa 2 Cu 3 O y the thermal expansion coefficient for the c axis is about four times that for the a and b axis [7]. Some researchers have studied the flux pinning-induced stress and strain in a superconductor [8][9][10]. Gu et al calculated the peeling stress at the film-substrate interface due to various temperature conditions [11,12].…”

Interface crack between superconducting film and substrate

“…Then, the quantitative analyses on the magnetoelastic behavior were made for different superconductor shapes and critical state models. [9][10][11][12][13][14][15] Another challenge is the crack problem in the superconductor. The electromagnetic force and thermal stress are the most important driving forces for crack growth in superconductors.…”