Search Results - "De Campos, M.F"

Domain wall structure in metals: A new approach to an old problem by da Silva Júnior, A.F., de Campos, M.F., Martins, A.S.

“…•Micromagnetic simulations of the domain wall structure.•Monte Carlo Simulated Annealing (MCSA) method for the energy’s minimization.•Inclusion of two exchange…”
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Energy of Ni/Ni3Al interface: A temperature-dependent theoretical study by Martins, A.S., de Campos, M.F.

“…Using plane wave ab-initio and Monte Carlo techniques, the Ni/Ni3Al interfacial energy is studied and the results from the different techniques are critically…”
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The optimum grain size for minimizing energy losses in iron by de Campos, M.F., Teixeira, J.C., Landgraf, F.J.G.

“…A model able to predict the optimum grain size for textured electrical steels used in motors or transformers is presented. The model is based on the Pry and…”
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The effects of the pressing step on the microstructure and aging of NdFeB bonded magnets by Périgo, E.A., de Campos, M.F., Faria, R.N., Landgraf, F.J.G.

“…The effects of the compaction step on the (micro)structural features and aging behavior of polymer coated NdFeB-based bonded magnets is reported. Due to the…”
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Effect of Frequency on the Iron Losses of 0.5% and 1.5% Si Nonoriented Electrical Steels by de Campos, M.F., Yonamine, T., Fukuhara, M., Landgraf, F.J.G., Achete, C.A., Missell, F.P.

“…The effect of grain size on iron losses were compared for two electrical steels with 0.5 and 1.5 wt% Si. The results confirm that the optimum grain size for…”
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Are There Any Alternatives for Rare-Earth Permanent Magnets? by de Campos, M.F.

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The Concept of Heat and the Hysteresis Loop: The Evolution of the Losses Models by de Campos, M.F.

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Cumulative Distribution Functions as Hysteresis Models by de Campos, M.F., de Castro, J.A.

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Effect of grain size, deformation, aging and anisotropy on hysteresis loss of electrical steels by Landgraf, F.J.G, Emura, M, Teixeira, J.C, de Campos, M.F

“…The investigation of the effect of cold deformation, anisotropy, aging and grain size on the shape of the hysteresis curve of non-oriented electrical steels…”
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Spin glass transition in AuFe, CuMn, AuMn, AgMn and AuCr systems by da Silva, Amilton F., Martins, A.S., de Campos, M.F.

“…•Simple Monte Carlo Model can predict the spin glass transition temperature.•Spin-glass model needs to be 3 dimensional with the full RKKY Hamiltonian.•The…”
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Small-angle neutron scattering study of coercivity enhancement in grain-boundary-diffused Nd[sbnd]Fe[sbnd]B sintered magnets by Périgo, E.A., Titov, I., Weber, R., Honecker, D., Gilbert, E.P., De Campos, M.F., Michels, A.

“…Isotropic NdFeB-based sintered magnets, before and after a (Tb-doped) grain-boundary diffusion process, have been investigated by means of…”
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Relation Between Magnetic Barkhausen Noise and Hardness for Jominy Quench Tests in SAE 4140 and 6150 Steels by Franco, Freddy A., González, M. F. R., de Campos, M. F., Padovese, L. R.

“…The nondestructive Magnetic Barkhausen Noise (MBN) technique was applied for the evaluation of SAE 4140 and SAE 6150 steels after a Jominy end-quench test…”
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Interpretation of Magnetic Barkhausen Noise Bursts in Low Frequency Measurements by Costa, L.F.T., Gerhardt, G.J.L., Missell, F.P., de Campos, M.F.

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On the Steinmetz hysteresis law by Landgraf, F.J.G., Emura, M., de Campos, M.F.

“…The behavior of the Steinmetz coefficient has been described for several different materials: steels with 3.2% Si and 6.5% Si, MnZn ferrite and Ni–Fe alloys…”
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Microstructural changes during the slow-cooling annealing of nanocrystalline SmCo 2:17 type magnets by Romero, S.A., de Campos, M.F., de Castro, J.A., Moreira, A.J., Landgraf, F.J.G.

“…► Use of the Stoner-Wohlfarth Callen Liu Cullen model in 2:17 type magnets. ► Data suggest exchange coupling between Sm2(CoFe)17 and Sm(CoCu)5 phases. ► It is…”
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Nd-enriched particles prepared from NdFeB magnets: A potential separation route by Fredericci, C., de Campos, M.F., Braga, A.P.V., Nazarre, D.J., Martin, R.V., Landgraf, F.J.G., Périgo, E.A.

“…The preparation of Nd-enriched particles from NdFeB sintered magnets using no acid or basic solution is reported. The combination of a…”
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Hysteresis loss subdivision by Landgraf, F.J.G., de Campos, M.F., Leicht, J.

“…Assuming that different energy dissipation mechanisms are at work along hysteresis, a hysteresis loss subdivision procedure has been proposed, using the…”
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Effect of rolling on the residual stresses and magnetic properties of a 0.5% Si electrical steel by de Campos, M.F., Sablik, M.J., Landgraf, F.J.G., Hirsch, T.K., Machado, R., Magnabosco, R., Gutierrez, C.J., Bandyopadhyay, A.

“…Cold-rolled (0–19% of reduction) 0.5% Si electrical steel sheets were studied in detail, including macro and micro residual stress measurements,…”
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Interacting Stoner–Wohlfarth behavior in hysteresis curves of Sm(CoFeCuZr) z magnets by Romero, S.A., de Campos, M.F., Rechenberg, H.R., Missell, F.P.

“…Several magnets with different Zr contents were studied: Sm(Co balFe 0.2Cu 0.1Zr x ) 8 (bal=balance; x=0, 0.02, 0.04, 0.06 and 0.08). The microstructure of the…”
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Magnetic Barkhausen emission in lightly deformed AISI 1070 steel by Capó Sánchez, J., de Campos, M.F., Padovese, L.R.

“…The Magnetic Barkhausen Noise (MBN) technique can evaluate both micro- and macro-residual stresses, and provides indication about the relevance of contribution…”
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