Title :
Barkhausen noise from sintered permanent magnets
Author :
Cuntze, Georg ; Brendel, Helmut ; Hubert, Alex
Author_Institution :
Inst. fur Werkstoffwissenschaften, Erlangen-Nurnberg Univ., Germany
fDate :
9/1/1996 12:00:00 AM
Abstract :
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
Keywords :
Barkhausen effect; boron alloys; coercive force; ferromagnetic materials; iron alloys; magnetic noise; magnetisation reversal; neodymium alloys; permanent magnets; Barkhausen noise; Nd-Fe-B; coercivity; correlated grain switching; hard magnetic nucleation-type material; reversal processes; sintered permanent magnets; volume fraction; Helium; Magnetic domain walls; Magnetic domains; Magnetic materials; Magnetic noise; Magnetic switching; Magnetization processes; Permanent magnets; Soft magnetic materials; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
