Magnetostriction and magnetization in deformable superconductors

• Published in: Physica. C, Superconductivity Vol. 483; pp. 51 - 54
• Main Authors: Yong, Huadong, Jing, Ze, Zhou, Youhe
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 14.12.2012; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Critical current density; Critical currents; Deformable superconductors; Exact sciences and technology; Formability; Joining; Magnetic fields; Magnetic properties; Magnetization; Magnetostriction; Physics; Properties of type I and type II superconductors; Superconductivity; Superconductors; Magnetostriction; Magnetization; Deformable superconductors; Critical current density; Superconductors; Partial differential equations; Superconductivity; Magnetic field effects; Strain distribution; Electromechanical properties
• ISSN: 0921-4534; 1873-2143
• DOI: 10.1016/j.physc.2012.07.002

[Display omitted] ► If we neglect the coupling between the mechanical behavior and the superconductivity, the critical current density is the constant in the superconductor with the Bean model (upper figure). ► On the contrary, the critical current density reaches the minimum in the center of the cylinder, where the volume change is the maximum (bottom figure). The coupling effect between the mechanical behavior and the superconductivity is significant in deformable superconductors. In this article, electromechanical characterizations for the deformable superconductors in magnetic field are presented. We assume that the critical current density is independent of the magnetic field and strain effect on the critical current density is symmetric. The coupled partial differential equations are derived for the bulk superconductor. We quantitatively illustrate the effects of coupling parameters on the magnetostriction and magnetization.