Temperature changes in a melt-processed YBCO superconductor activated by field cooling magnetizing process

T. Oka; K. Yokoyama; H. Fujishiro; M. Kaneyama; K. Noto

doi:10.1016/j.physc.2005.01.085

Temperature changes in a melt-processed YBCO superconductor activated by field cooling magnetizing process

T. Oka, K. Yokoyama, H. Fujishiro, M. Kaneyama, K. Noto

Department of Materials Science and Engineering

Research output: Contribution to journal › Conference article

11 Citations (Scopus)

Abstract

The temperature rise during the field cooling (FC) magnetizing process with various sweep rates by using a 10 T superconducting solenoid magnet was systematically evaluated with respect to an YBCO single domain trapped-field magnet cooled to 57-75 K by a GM refrigerator. The maximum temperature change has reached 6 K when the sweep rate was -11.3 mT/s and initial temperature of 57 K. The recent elevation of the sweep rate of superconducting magnet and the critical current density of bulk samples have made the heat generation serious even in the FC operation by quasi-static magnetic field.

Original language	English
Pages (from-to)	794-799
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	426-431
Issue number	I
DOIs	https://doi.org/10.1016/j.physc.2005.01.085
Publication status	Published - 2005 Oct 1
Event	Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity - Duration: 2004 Nov 23 → 2004 Nov 25

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Keywords

Bulk superconductor
Field cooling
Melt-process
Trapped field magnet

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Cite this

Oka, T., Yokoyama, K., Fujishiro, H., Kaneyama, M., & Noto, K. (2005). Temperature changes in a melt-processed YBCO superconductor activated by field cooling magnetizing process. Physica C: Superconductivity and its applications, 426-431(I), 794-799. https://doi.org/10.1016/j.physc.2005.01.085

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10.1016/j.physc.2005.01.085