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Magnetization of YBCO bulks with permanent magnets and hybrid magnetizer

K. JÁNOS1, V. ISTVÁN1, T. PRIKHNA2,*

Affiliation

  1. Budapest University of Technology and Economics, Budapest, Hungary, 1111 Budapest, Egry József u. 18. Hungary
  2. Institute for Superhard Materials of NASU, Kyiv, Ukraine, 2, Avtozavodskaya Str., Kiev, 04074, Ukraine

Abstract

We have designed, built and tested three magnetizers that enable fast and inexpensive magnetization of YBCO bulks with the FC method. The first device consists of a permanent magnetic circuit with moveable magnetic poles. The other one is a hybrid magnetizer where we applied permanent magnets and properly designed coils with dc current excitation. The third version is a magnetizer just with an excitation coil without cooling. In this case we have measured 2 Tesla at 2650 W electrical power in 18.4 mm air gap. These solutions are of low cost..

Keywords

Magnetizer, Trapped flux, YBCO bulk, Machining of superconductor, Magnetic characterization.

Submitted at: March 13, 2008
Accepted at: May 14, 2008

Citation

K. JÁNOS, V. ISTVÁN, T. PRIKHNA, Magnetization of YBCO bulks with permanent magnets and hybrid magnetizer, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 5, pp. 1005-1010 (2008)