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Experimental and micromagnetic first-order reversal curves analysis in NdFeB-based bulk “exchange spring”-type permanent magnets |
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| Authors: | Horia Chiriac Nicoleta Lupu Laurentiu Stoleriu Petronel Postolache Alexandru Stancu |
| Affiliation: | 1. National Institute of Research and Development for Technical Physics, 47 Mangeron Boulevard, 700050, Iasi, Romania;2. Al. I. Cuza University, Department of Solid State and Theoretical Physics, Blvd. Carol I, 11, 700506, Iasi, Romania |
| Abstract: | In this paper we present the results of applying the first-order reversal curves (FORC) diagram experimental method to the analysis of the magnetization processes of NdFeB-based permanents magnets. The FORC diagrams for this kind of exchange spring magnets show the existence of two magnetic phases—a soft magnetic phase and a hard magnetic one. Micromagnetic modeling is used for validating the hypotheses regarding the origin of the different features of the experimental FORC diagrams. |
| Keywords: | 75.50.Kj 81.40.Rs 75.50.Ww 75.75.+a |
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