publication . Article . 2015

Numerical simulation and analysis of single grain YBCO processed from graded precursor powders

Jin Zou; Yunhua Shi; Mark D. Ainslie; N. Devendra Kumar; John H. Durrell; David A. Cardwell; Di Hu; Wei Zhai;
Open Access
  • Published: 05 Feb 2015 Journal: Superconductor Science and Technology, volume 28, page 35,016 (issn: 0953-2048, eissn: 1361-6668, Copyright policy)
  • Publisher: IOP Publishing
  • Country: United Kingdom
Abstract
Large single-grain bulk high-temperature superconducting materials can trap high magnetic fields in comparison with conventional permanent magnets, making them ideal candidates to develop more compact and efficient devices, such as actuators, magnetic levitation systems, flywheel energy storage systems and electric machines. However, macro-segregation of Y-211 inclusions in melt processed Y–Ba–Cu–O (YBCO) limits the macroscopic critical current density Jc of such bulk superconductors, and hence, the potential trapped field. Recently, a new fabrication technique with graded precursor powders has been developed, which results in a more uniform distribution of Y-21...
Subjects
free text keywords: Electrical and Electronic Engineering, Materials Chemistry, Condensed Matter Physics, Metals and Alloys, Ceramics and Composites, trapped field magnets, bulk superconductors, graded YBCO, finite element method (FEM) modelling, bulk superconductor magnetization, Magnetization, Magnet, Computer simulation, Magnetic levitation, Fabrication, Superconductivity, Magnetic field, Materials science, Uniform distribution (continuous)
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