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Barkhausen noise from sintered permanent magnets

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3 Author(s)
G. Cuntze ; Inst. fur Werkstoffwissenschaften, Erlangen-Nurnberg Univ., Germany ; H. Brendel ; A. Hubert

We introduce the well known Barkhausen technique as a tool for investigation of reversal processes in hard magnetic nucleation-type material. First results of our experiments show the occurrence of correlated grain switching not to be neglectible in the samples of sintered Nd-Fe-B as the volume fraction of multiple Barkhausen jumps reaches 50% near coercivity

Published in:

IEEE Transactions on Magnetics  (Volume:32 ,  Issue: 5 )