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Production of pulse magnetic fields higher than 400 kOe and their applications to various magnetic measurements

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5 Author(s)
S. Chikazumi ; University of Tokyo, Roppongi, Tokyo, Japan ; S. Tanuma ; I. Oguro ; F. Ono
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By using a condenser bank of the capacity 9000 μF and the working voltage 3.3 kV, magnetic fields higher than 400 kOe have been produced in a pulse form, the duration of which is about 1 ms. In order to avoid the mechanical breakdown of the coil, various types of coils including a toroidal transformer-type device have been constructed. Using these fields, various experiments have been performed. Magnetization parallel to the c axis (hard axis) of the Tb single crystal in the magnetic fields of 200 to 620 kOe at 77°K caused an appreciable lattice elongation parallel to the c axis, which resulted in an appearance of the local anisotropy with its hard axis perpendicular to the c axis. Measurements of the magnetoresistance effect of dilute alloys and the high field susceptibility of ferromagnets are also described.

Published in:

IEEE Transactions on Magnetics  (Volume:5 ,  Issue: 3 )