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Acta Mechanica Solida Sinica

, Volume 27, Issue 1, pp 65–72 | Cite as

Effect of Magnetic Nanoparticles on the Mechanical Properties of Type-II Superconductors

  • Chenguang Huang
  • Huadong Yong
  • Youhe Zhou
Article

Abstract

In this paper, the effect of magnetic nanoparticles on the mechanical properties of a type-II superconductor is investigated both theoretically and numerically. Magnetic part of the pinning force associated with the interaction between a finite-size spheroidal magnetic inclusion and an Abrikosov vortex is calculated in the London approximation. It is found that the size and shape of magnetic nanoparticles result in different enhancements of vortex pinning in large-k type-II superconductors. Meanwhile, the screening current induced by a magnetic spheroid suffer the action of Lorentz force, which will lead to prestress in the superconductor, so further numerical calculations are needed to explore the interaction between the spheroidal magnetic particle and superconductor. The distribution of displacement, stress and strain in the superconductor are finally obtained. It is shown that different sizes and shapes of nanoparticles also can change the distributions of these quantities.

Key Words

magnetic nanoparticles spheroidal inclusion pinning force stress distribution type-II superconductor 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2014

Authors and Affiliations

  1. 1.Key Laboratory of Mechanics on Environment and Disaster in Western China, The Ministry of Education of ChinaLanzhou UniversityLanzhouChina
  2. 2.Department of Mechanics and Engineering Sciences, School of Civil Engineering and MechanicsLanzhou UniversityLanzhouChina

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