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Schrefl, Thomas; Shoji, Tetsuya; Winklhofer, Michael; Oezelt, Harald; Yano, Masao; Zimanyi, Gergely (2012): First order reversal curve studies of permanent magnets. In: Journal of Applied Physics, Vol. 111, No. 7
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First order reversal curve (FORC) diagrams are a useful tool to analyzethe magnetization processes in magnetic materials. FORC diagrams arecomputed from measured first order reversal curves on sintered Nd2Fe14Bmagnets. It is shown that the FORC diagram simplifies if the first orderreversal curves a desheared using the macroscopic demagnetizing fieldgiven by the geometry of the sample. Furthermore the resulting FORCdiagram is almost identical to the FORC diagram measured for a thinplatelet of the same material. This opens the possibility to compareexperimental FORC diagrams with FORC diagrams computed by micromagneticsimulations. (C) 2012 American Institute of Physics. [doi:10.1063/1.3678434]